It’s time for another episode of the Wtf Happened to This Horror Movie? video series, and with this one we’re looking back at director Chan-wook Park’s 2003 South Korean film Oldboy (watch it Here) – a movie that has not only been ranked on lists of the Greatest Films Ever Made, but has also had people looking at hammers differently for over twenty years now. You can hear all about it in the video embedded above.

Written by Park with Jo-yun Hwang and Jun-hyung Lim, Oldboy is a loose adaptation of the Japanese manga of the same name. The film has the following synopsis: Dae-Su is an obnoxious drunk bailed from the police station yet again by a friend. However, he’s abducted from the street and wakes up in a cell, where he remains for the next 15 years, drugged unconscious when human contact is unavoidable, otherwise with only the television as company.