Oldboy (Hangul: 올드보이; RR: Oldeuboi; MR: Oldŭboi) is a 2003 South Korean mystery thriller film directed by Park Chan-wook. It is based on the Japanese manga of the same name written by Nobuaki Minegishi and Garon Tsuchiya. Oldboy is the second installment of The Vengeance Trilogy, preceded by Sympathy for Mr. Vengeance and followed by Sympathy for Lady Vengeance.
The film won the Grand Prix at the 2004 Cannes Film Festival and high praise from the President of the Jury, director Quentin Tarantino. Critically, the film has been well received in the United States, with an 80% "Certified Fresh" rating at Rotten Tomatoes. Film critic Roger Ebert claimed that Oldboy is a "powerful film not because of what it depicts, but because of the depths of the human heart which it strips bare".In 2008, voters on CNN named it one of the ten best Asian films ever made. A remake with the same title was released in 2013 in the United States.
An average man is kidnapped and imprisoned in a shabby cell for 15 years without explanation. He then is released, equipped with money, a cellphone and expensive clothes. As he strives to explain his imprisonment and get his revenge, Oh Dae-Su soon finds out that his kidnapper has a greater plan for him and is set onto a path of pain and suffering in an attempt to uncover the motive of his mysterious tormentor.