Secret Door (2025): cast, story & where to watch
2025 · Film · ★ 5
Released in 2025, Secret Door is a romance film directed by Lee Dong-hyun, running about 74 minutes.
What it’s about. Ham Jae-kyeong, a successful adult web novel writer, suddenly finds herself in a slump. She rewrites her writing and characters keep overlapping. Se-hee, the CEO of a web novel company, is Jae-kyeong’s friend. Se-hee suggests to Jae-kyeong that she write a SM novel as a way to overcome her slump. At first, she refuses, but after being persuaded by her assistant writer, Gi-dong, she meets Seong-soo, who enjoys SM play. Jae-kyeong is drawn to the handsome and well-mannered Seong-soo. Is he researching for her novel or is he in a relationship? Growing increasingly captivated by Seong-soo’s charm, she begins to embrace SM play.
Who’s in it. Secret Door stars Oh Ji-yoon, Jang Tae-gyeom, Kim Dan-ah as Kim Se-hee and Seung Ha.
How it landed. With an audience score of 5.0/10, Secret Door has proved divisive with audiences.
Where to watch. Streaming options change often. See the full, country-by-country breakdown on our where to watch Secret Door page.
If you liked it. Fans of Secret Door tend to enjoy Forrest Gump, Your Name., Dilwale Dulhania Le Jayenge and Cinema Paradiso.
Frequently asked
- Where can I watch Secret Door (2025)?
- Streaming, rental and purchase options for Secret Door change frequently. Check our where-to-watch page for the latest availability in your country.
- Is Secret Door worth watching?
- Secret Door holds an audience score of 5.0 out of 10, and is a strong pick if you enjoy romance. Reactions are mixed, so it may depend on taste.
- Who stars in Secret Door?
- Secret Door stars Oh Ji-yoon, Jang Tae-gyeom, Kim Dan-ah and Seung Ha.
- When was Secret Door released?
- Secret Door was released in 2025, with a runtime of about 74 minutes.