Oldboy

In 1988, a businessman named Oh Dae-su (Choi Min-sik) is arrested for drunkenness, missing his daughter's fourth birthday. After his friend Joo-hwan (Ji Dae-han) retrieves him from the police station, they go to a phone booth for Dae-su to call home. While Joo-hwan is talking to Dae-su's wife, Dae-su is kidnapped, and wakes up in a sealed hotel room where food is delivered through a trap-door. By watching the television, Dae-su learns that his wife has been murdered and that he is the prime suspect. Dae-su passes the time shadow-boxing, planning revenge, and attempting to dig a tunnel to escape. Read more on Wikipedia.