This film is fantastic. It's full of mystery and kept my interest right up until the credits. It's about a man named Oh Dae-su, who lives with his wife and daughter. He is kidnapped and later wakes up to find himself in a private makeshift prison. Dae-su wonders what made someone hate him so much enough to imprison him without any reason. While imprisoned, Dae-su hears on the TV news that his wife was murdered. Dae-su swears to take revenge on the person who destroyed his happy life. Fifteen years later, he is released with a wallet filled with money and a mobile phone. An unknown man calls Dae-su and asks him to figure out why he was imprisoned. The story then unfolds into an incredible and shocking tale of revenge. This movie is an absolute must-see.