Secret Door

Drama

History

Mystery

5.520141 Seasons24 Episodesko

A re-imagining of the legendary tale of the troubled father-son relationship between King Yeongjo and his only son Prince Sado. While his father insists on a strong and centralized government, Crown Prince Sado promotes social justice and equality throughout the kingdom. Throughout eight fateful years, the strain on their relationship — both familial and political — eventually evolves into a total breakdown, ending with one of the most tragic stories in Joseon history.

55%

TMDB Score

4K HDR

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Episodes

S1E1

Episode 1

A document, thought long destroyed, tying King Yeongjo's ascension the throne to the Noron Faction, resurfaces. Crown Prince Sado distrupts the government by proclaiming the creation and distribution of books by commoners legal.

S1E2

Episode 2

Heung Bok's body is found and the conspiracy to cover-up his murder begins.

S1E3

Episode 3

Unsatisfied with the result of the investigation into Heung Bok's death, Crown Prince Sado re-opens the case, personally heading it himself.

S1E4

Episode 4

Prince Sado succumbs to all evidence painting Heung Bok as a traitor, that is until Ji Dam approaches him with proof to the contrary.

S1E5

Episode 5

With Ji Dam's help, Prince Sado delves deeper into the conspiracy behind Heung Bok's death.

S1E6

Episode 6

Ji Dam hides out in a brothel while Prince Sado discovers the meaning behind Jung Woon's dying message.

S1E7

Episode 7

Prince Sado seeks out the identity of the man Heung Bok's final royal painting.

S1E8

Episode 8

An investigation into yet another death leads Prince Sado to suspect one of the people he trusts most.

S1E9

Episode 9

Prince Sado is accused of murder.

S1E10

Episode 10

Teacher Park Moon Soo makes a deal to try and save Prince Sado from prison.

S1E11

Episode 11

Prince Sado becomes suspicious of his father's role in the document.

S1E12

Episode 12

King Yeongjo appoints a new Prime Minister and sets out to enact new tax reforms while Prince Sado struggles with what to do about his father.

S1E13

Episode 13

King Yeongjo unleashes his punishment on the booklenders.

S1E14

Episode 14

King Yeongjo strips Prince Sado of all governing power. Three years later, Prince Sado begins a secret plan beginning with taking Kim Taek as his new teacher.