Oldeuboi 2003
Dae Soo is a normal man who is inexplicably abducted one day and forcibly confined in a small room for fifteen years without knowing why. After his release, he is given a cell phone, money, and expensive clothes, but Dae Soo is determined to take revenge on those who imprisoned him for 15 years. He soon realizes that he is part of a much bigger plan and must endure great pain to uncover the truth. The true pain he will suffer lies hidden on the path to finding the truth.