Oh Dae-Su, a man who spent 15 years in captivity, wakes up in a hotel room with no windows, fed and sedated to prevent suicide. After his release, he's told to find his captors and get revenge, but the question remains, who could hate him enough to keep him alive for so long.

Oldboy
A man, Oh Dae-Su, is released after 15 years of imprisonment, with a five-day window to exact revenge on his tormentor.