Missing Crown Prince (2024) official poster
📺 K-Drama Guide · Historical · Romance

Missing Crown Prince

세자가 사라졌다 · 2024
✅ Completed · 20 eps
🎬 Viki · Viu
⭐ 7.9 / 10 MDL
🔞 PG-13
⚡ Updated · May 21, 2026

📋 Drama Overview

Everything you need to know before you hit play.

Missing Crown Prince (2024) official poster
Completed
Missing Crown Prince
세자가 사라졌다 · 2024 · South Korea
WriterKim Ji-soo, Park Chul
DirectorKim Jin-man
Episodes20 eps · ~60 min each
⏱️ Binge Time20h 0m
AiredApr 13 – Jun 16, 2024
GenreHistorical, Romance, Comedy
Content RatingPG-13

VikiViu
Joseon EraPalace IntrigueStrangers to LoversSageukEXO Suho

Crown Prince Yi Geon (Suho) has always found palace walls suffocating. He sneaks out at night — and on one such outing, he is accidentally kidnapped by a royal physician attempting a proxy marriage ritual to break his daughter’s widow curse. That daughter is Choi Myeong-yoon (Hong Ye-ji), who has no idea the stranger she rescues and returns to the city is the Crown Prince himself. When political enemies within the royal court use the chaos to frame Yi Geon and strip him of his title, the two find themselves fugitives — strangers thrown together by one catastrophic case of mistaken timing.

What begins as a frantic comedy of errors deepens into something more layered: a love story built in the margins of a palace power struggle, between a crown prince who learns to see the world outside his privilege and a woman who never had the luxury of not seeing it. The Queen Dowager’s faction, a treacherous councillor, and a conspiracy that reaches the King himself raise the stakes well beyond a simple escape story — and push both leads toward choices that cannot be undone.

Episode Progress20 / 20 ✅ Completed

⚡ Quick Verdict

One box. Everything you need to decide.

⭐ Worth it?YES — if you enjoy sageuk rom-coms
⏱️ CommitmentVery High — ~20 hours total
💛 VibeWarm · Playful · Quietly Romantic
📺 Skip if…You need fast romance and tight pacing

⭐ 7.9 / 10
· MDL Score · 2,923 ratings

▶ Official Trailer

Watch the official trailer for Missing Crown Prince (2024).

🎭 Cast & Characters

Twelve performances that bring Joseon’s court — and its conspiracies — to life.

Suho as Crown Prince Yi Geon in Missing Crown Prince (2024)
Suho
Crown Prince Yi Geon

Lead

Hong Ye-ji as Choi Myeong-yoon in Missing Crown Prince (2024)
Hong Ye-ji
Choi Myeong-yoon

Lead

Kim Min-kyu as Grand Prince Dosung in Missing Crown Prince (2024)
Kim Min-kyu
Grand Prince Dosung

Supporting

Myung Se-bin as Min Su-ryeon in Missing Crown Prince (2024)
Myung Se-bin
Min Su-ryeon (Queen Dowager)

Antagonist

Kim Ju-hun as Choi Sang-rok in Missing Crown Prince (2024)
Kim Ju-hun
Choi Sang-rok

Antagonist

Yoo Se-rye as Queen Yoon in Missing Crown Prince (2024)
Yoo Se-rye
Queen Yoon

Supporting

Jeon Jin-oh as King Haejong in Missing Crown Prince (2024)
Jeon Jin-oh
King Haejong

Supporting

Cha Kwang-soo as Yoon Yi-gyeom in Missing Crown Prince (2024)
Cha Kwang-soo
Yoon Yi-gyeom

Villain

Kim Seol-jin as Gab-seok in Missing Crown Prince (2024)
Kim Seol-jin
Gab-seok

Supporting

Kim Sung-hyun as Han Sang Soo in Missing Crown Prince (2024)
Kim Sung-hyun
Han Sang Soo

Supporting

Choi Sia as Seon-ok in Missing Crown Prince (2024)
Choi Sia
Seon-ok

Supporting

Park Sung-woo as Heo Jin-soo in Missing Crown Prince (2024)
Park Sung-woo
Heo Jin-soo

Supporting

🍿 Where to Watch

Stream Missing Crown Prince on these platforms.

📺 Episode Guide

Spoiler-light recaps — enough to remember where you left off, nothing that ruins the ride.

Missing Crown Prince Episode 1 — The Prince Goes Missing
EP 01
The Prince Goes Missing
April 13, 2024 · MBN
A rebel siege exposes the Crown Prince’s unauthorized absence from the palace — and sets the King and Queen Dowager scrambling to arrange his marriage. Separately, a court maid is found dead near the Queen Dowager’s quarters, and Yi Geon’s late-night investigation puts him in the wrong place at a very wrong time.

Missing Crown Prince Episode 2 — The Mistaken Kidnapping
EP 02
The Mistaken Kidnapping
April 14, 2024 · MBN
Royal physician Choi grabs the wrong man for his daughter’s proxy ritual — and the man he grabs happens to be the Crown Prince. Myeong-yoon frees the stranger and gets him safely back to the palace with no idea who she rescued, while the Queen Dowager begins her campaign to have Yi Geon stripped of his title.

Missing Crown Prince Episode 3 — Refuge Outside the Palace
EP 03
Refuge Outside the Palace
April 20, 2024 · MBN
Yi Geon slips out again and finds Myeong-yoon waiting — she treats his stab wound and shelters him without blinking. As the King moves to track down a mysterious needle canister, royal physician Heo Jin-soo is discovered dead in his home. The chemistry between the two leads quietly begins here.

Missing Crown Prince Episode 4 — Shocking Revelations
EP 04
Shocking Revelations
April 21, 2024 · MBN
Prince Dosung discovers his grandfather has allied with the Queen Dowager — a betrayal that sends him looking for allies in unexpected places. Yi Geon confirms the Queen Dowager’s secret affair to his brother, while the Dowager herself approaches Queen Yoon, broadening the conspiracy’s reach.

Missing Crown Prince Episode 5 — The Poisoned King
EP 05
The Poisoned King
April 27, 2024 · MBN
Poison in the royal table plunges the King into a critical state — and Yi Geon is immediately arrested as the prime suspect. Myeong-yoon witnesses the arrest and turns to Dosung for answers. With the Crown Prince imprisoned, the Left State Councillor and the Queen Dowager move fast to install Dosung in his place.

Missing Crown Prince Episode 6 — The Missing Royal Seal
EP 06
The Missing Royal Seal
April 28, 2024 · MBN
Dosung quietly engineers Yi Geon’s prison escape. Just as the Queen Dowager announces plans to install Dosung as Crown Prince, the royal seal vanishes — throwing every political calculation into disarray and buying Yi Geon precious time outside the palace walls.

Missing Crown Prince Episode 7 — Fugitives on the Run
EP 07
Fugitives on the Run
May 4, 2024 · MBN
Myeong-yoon refuses to let Yi Geon flee alone and joins the road with him. When she falls ill mid-journey, they take shelter at a local physician’s home — only to be recognized and reported. The episode captures the series at its most fun: two unlikely companions navigating the world outside their respective cages.

Missing Crown Prince Episode 8 — Identity Revealed
EP 08
Identity Revealed
May 5, 2024 · MBN
Dosung’s palace theatrics buy the fugitives time, and the two find refuge at Yi Geon’s grandfather’s estate — where Myeong-yoon finally discovers the truth about the man she has been protecting. Suho and Hong Ye-ji carry the revelation scene quietly and precisely; it lands exactly as it should.

Missing Crown Prince Episode 9 — A Deal with the Enemy
EP 09
A Deal with the Enemy
May 11, 2024 · MBN
With the King fading, only Choi Sang-rok holds knowledge of a cure — and Dosung agrees to cooperate with the Queen Dowager’s faction in exchange for his father’s life. Yi Geon and Myeong-yoon reveal their true identities to each other, closing the gap between them just as the political danger intensifies.

Missing Crown Prince Episode 10 — Palace Tensions Rise
EP 10
Palace Tensions Rise
May 12, 2024 · MBN
A surprise attack fractures the Queen Dowager’s alliance with the Left State Councillor. Myeong-yoon enters the palace under her father’s orders and secretly assists Dosung in identifying the poison used against the King — placing herself directly inside the conspiracy she barely escaped from.

Missing Crown Prince Episode 11 — The Crown Prince Returns
EP 11
The Crown Prince Returns
May 18, 2024 · MBN
Yi Geon arrives at Dosung’s investiture ceremony with the real royal seal and clears his name before the entire court. His public warning to the Queen Dowager and Choi Sang-rok is precise and unhurried — and the look on their faces confirms the tide has turned. Suho is at his most commanding here.

Missing Crown Prince Episode 12 — A Father's Betrayal
EP 12
A Father’s Betrayal
May 19, 2024 · MBN
The Queen Dowager and Sang-rok’s escape attempt is foiled — and Sang-rok, cornered, plots to assassinate Yi Geon to protect them both. Myeong-yoon intervenes and stops him herself. Meanwhile, the Queen secretly orders the royal food taster to silence herself before she can testify.

Missing Crown Prince Episode 13 — The Truth About Sang-rok
EP 13
The Truth About Sang-rok
May 25, 2024 · MBN
Myeong-yoon learns her father has been conducting an affair with the Queen Dowager — and that he was responsible for her mother’s death. Kim Ju-hun navigates this revelation with a carefully calibrated moral ambiguity that elevates what could have been a standard villain arc into something more complicated and genuinely affecting.

Missing Crown Prince Episode 14 — Court Lady Kim's Dismissal
EP 14
Court Lady Kim’s Dismissal
May 26, 2024 · MBN
Yi Geon engineers the dismissal of the Queen Dowager’s key court lady through a scheme involving Queen Yoon’s institutional authority. Gap-seok’s open-court testimony about the food taster’s death shifts the political balance decisively — and marks the beginning of the Queen Dowager’s real unraveling.

Missing Crown Prince Episode 15 — Betrayal of Prince Dosung
EP 15
Betrayal of Prince Dosung
June 1, 2024 · MBN
Myeong-yoon recovers a critical antidote prescription from the Queen Dowager’s chambers — but the episode ends on a gut punch: Dosung publicly declares his alliance with the Queen Dowager and announces his intention to claim the Crown Prince’s title. Kim Min-kyu sells the turn with complete conviction.

Missing Crown Prince Episode 16 — The Final Ultimatum
EP 16
The Final Ultimatum
June 2, 2024 · MBN
Yi Geon’s grandfather is tortured on the Queen Dowager’s orders — and Yi Geon is powerless to intervene without triggering a bloodbath. Myeong-yoon, facing an impossible choice, offers to marry Dosung in exchange for the old man’s life. The series’ darkest episode, and the setup for its most satisfying reversal.

Missing Crown Prince Episode 17 — The King Strikes Back
EP 17
The King Strikes Back
June 8, 2024 · MBN
The King regains consciousness and secretly reunites with Yi Geon — and together they mobilize the elite Tiger Hunters to retake the palace. Both factions arm themselves simultaneously, raising the tension to its highest point. Court Lady Cho receives a hidden order that could end everything before the confrontation even begins.

Missing Crown Prince Episode 18 — Order Restored
EP 18
Order Restored
June 9, 2024 · MBN
The King reasserts his authority and formally dismisses everyone implicated in the coup. Yi Geon is reinstated as Crown Prince; Dosung is relocated outside the palace. Choi Sang-rok breaks free from custody, vanishing with the Queen Dowager — leaving the drama’s most morally complex relationship unresolved for its final stretch.

Missing Crown Prince Episode 19 — The Final Conspiracy
EP 19
The Final Conspiracy
June 15, 2024 · MBN
Sang-rok discovers the Queen Dowager is pregnant with his child — and the revelation reshapes everything he does next. He forges a final coup alliance with Yoon Yi-gyeom, while Myeong-yoon learns the full truth about the night her mother died. A penultimate episode that raises the emotional and political stakes together, heading into the finale.

Missing Crown Prince Episode 20 — A Kingdom Reclaimed
EP 20
A Kingdom Reclaimed
June 16, 2024 · MBN
The coup night arrives — and everything Yi Geon and Dosung prepared for is revealed in a single, sweeping twist. The conspirators fall; the survivors are given second chances where they’re earned. And in the finale’s most unexpected move, Yi Geon chooses a life outside the throne — trading the crown for the world he actually wants to live in.

🏁 Ending Explained

Full spoilers ahead — everything that happens in the finale and what it all means.

⚠️
Spoiler Warning — This section covers the full finale of Missing Crown Prince. Stop here if you haven’t finished the series.

The coup that was never real. Episode 20 opens with what looks like total collapse: Yi Geon and Dosung have apparently turned on each other, Yoon Yi-gyeom has kidnapped Myeong-yoon as leverage, and Choi Sang-rok has mobilized the Seoin Faction for a night assault on the palace. The reveal lands quickly and cleanly — the falling-out was staged. Yi Geon and Dosung had been coordinating the entire time, their public argument a calculated trap designed to draw the conspirators into the open. Yi-gyeom’s men drink poisoned alcohol prepared in advance. Yi Geon arrives with the royal army. The coup collapses before it begins.

Missing Crown Prince (2024) Episode 19 — The Final Conspiracy

Sang-rok’s redemption — and its cost. The drama’s most morally complicated arc resolves in the most human way possible: Choi Sang-rok, a man who spent twenty episodes straddling the line between protector and villain, dies saving the Queen Dowager Min Soo-ryun from Yi-gyeom’s assassins. It is not a clean heroic death — it is the final act of a man whose love for someone he should never have loved drove nearly every decision he made. Kim Ju-hun plays it without sentiment. Soo-ryun survives the coup night but does not survive the birth of their child, dying shortly after and leaving behind a daughter who inherits none of her parents’ sins.

What Yi Geon actually wants. In the finale’s most surprising political choice, the newly crowned King Yi Geon voluntarily abdicates the throne — not in defeat, but in clarity. He passes the crown to Dosung and reinvents himself as a secret royal inspector, traveling the kingdom to root out corruption. It is the most honest version of who Yi Geon always was: a prince who never wanted the throne, only the freedom to do something real with the power it gave him. Dosung and Queen Yoon are formally rehabilitated, their titles restored, and the court reshapes itself around a king who actually wanted to be there.

Missing Crown Prince (2024) Episode 10 — Palace Tensions Rise

The private nickname that closes the loop. Yi Geon finds Myeong-yoon again in disguise — greeting her at her clinic using the private nickname “Baek-goo,” the name they used during their fugitive days on the road. He asks her to call him “Dear husband.” They marry. They raise two children together, including Sang-rok and Soo-ryun’s orphaned daughter — a final image of repair built from the wreckage of the generation before them. The daughter’s inclusion is not sentimental filler; it is the drama’s argument that what parents break, the next people can choose to carry differently.

What the ending is actually about. Missing Crown Prince is not really a drama about palace conspiracy, even though it runs twenty episodes deep into one. The conspiracy is the pressure that reveals who people are when the rules no longer protect them. Yi Geon learns that power without purpose is just a cage. Myeong-yoon learns that the curse she spent her whole life dreading was never about death — it was about learning to trust someone enough to let them stay. The ending earns its warmth because the drama spent enough time showing us exactly what it cost to get there.

Missing Crown Prince (2024) Episode 1 — The Prince Goes Missing

✍️ KDramaWorlds Editor’s Take

Our honest read on why this drama is worth your time — and who it’s for.

🌸 Warm Sageuk💛 Accidental Romance⚔️ Palace Intrigue🏃 Fugitive Chemistry

Missing Crown Prince earns its place in the Joseon rom-com tradition by doing something the genre occasionally forgets: letting the two leads actually spend time together before the plot tears them apart. The fugitive stretch in episodes 3 through 8 is the drama at its most alive — Suho and Hong Ye-ji building a rapport that feels genuine rather than manufactured, two people thrown together by accident who discover they are each exactly what the other needed. Suho’s performance is a pleasant surprise for anyone who came with low expectations: he plays Yi Geon with a charismatic lightness that never tips into silliness, and the transition to quiet seriousness when the stakes arrive is handled with real care. Hong Ye-ji gives Myeong-yoon a backbone that keeps the character from being swept away by the romance — she makes decisions that cost her, and she owns them. The show also links naturally to other sageuk-romance series on KDramaWorlds like The King’s Affection (2021) and Under the Queen’s Umbrella (2022) for viewers who want to stay in this corner of the genre.

Missing Crown Prince (2024) — cinematic still

The second half is where patience becomes a requirement. Once Yi Geon returns to the palace in episode 11, the drama shifts into a more conventional political thriller register — and the 20-episode length starts to show its seams. The conspiracy mechanics are competent but not especially inventive, and some of the supporting antagonists exist mainly to be outmaneuvered. Kim Min-kyu as Dosung and Kim Ju-hun as Sang-rok are consistently the most interesting presences in the palace scenes: Dosung’s ambiguity is handled with enough restraint that his eventual alliance with Yi Geon lands as earned rather than obvious, and Sang-rok’s arc gives the drama a genuine moral center to counterweight against the political maneuvering. The pacing slows most noticeably in episodes 13 through 16, where the same power dynamics are reset several times before the finale machinery kicks in properly.

What saves it — and what makes the finale genuinely satisfying — is the drama’s commitment to its characters’ internal logic. Yi Geon’s abdication is not a narrative shortcut; it is the only ending that makes sense for who he is. Myeong-yoon raising Sang-rok’s orphaned daughter is not a bow on a package — it is the show’s quietest argument about the difference between inherited fate and chosen family. Missing Crown Prince will not win prizes for plot architecture, but it knows what kind of drama it wants to be, and it ends exactly there. If you can carry it through the middle stretch, the final two episodes will make you feel like the investment was worth making.

👍👍👍 BEST FOR 👍👍👍
🏰 Fans of Joseon-era rom-coms and sageuk romance
🎤 EXO fans curious about Suho’s acting range
💛 Viewers who want warmth and a satisfying, earned ending

⚖️ Final Verdict
What works
Suho and Hong Ye-ji’s genuine on-screen chemistry
The fugitive stretch (eps 3–8) — energetic, warm, and funny
Kim Ju-hun’s morally complex Sang-rok arc
A finale that resolves every thread with emotional logic

What to know first
Second half pacing slows significantly — patience required
20 episodes is too long — would have been tighter at 16
Not for viewers who dislike palace politics repetition
Supporting antagonists are functional rather than memorable

7.9 / 10Watch it for the chemistry and the ending — just know the middle asks more of you than it gives back.

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