Secret Door
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.
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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.
Cast
Lee Je-hoon, Kim Yoo-jung, Yoon So-hee, Han Suk-kyu, Park Eun-bin, Kim Min-jong, Lee Won-jong, Kwon Hae-hyo, Jeon Kuk-hwan, Jang Hyun-sung
Secret Door is streaming on Kocowa. Secret Door is streaming on Kocowa Amazon Channel. Secret Door is streaming on OnDemandKorea. Secret Door is streaming on Rakuten Viki. Availability last verified February 23, 2026.
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Kocowa
Stream • Included
Kocowa Amazon Channel
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OnDemandKorea
Stream • Included
Rakuten Viki
Stream • Included
