Oldeuboi plot
"Laugh, and the world laughs with you. Weep, and you weep alone."
Without knowing why, Oh Dae-su (Choi Min-sik) is kept in a small room for fifteen years. He has no contact with the outside world and is close to madness. One day he wakes up on the roof of an apartment building; he was released without any warning. Determined, Dae-su sets out to find the reason for his captivity. But when he learns that his wife was murdered in his absence, he vows revenge.