The film tells the story of Oh Dae-su (played by Choi Min-sik), a businessman who is kidnapped and held captive in a mysterious room for 15 years. The captor's identity and motives are unknown, and Oh Dae-su is left to fend for himself, trying to find a way to escape.
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Oldboy (2003) - A South Korean Psychological Thriller The film tells the story of Oh Dae-su