The Age of Hangover.

Youngsters Gassi, Lily and Sun are in a concert when they meet Yoko, Sun’s ex-girlfriend. Together, they spend their days getting drunk, crying out their depressions in a subtle but destructive way. As Gassi breaks up with his girlfriend, he will get a chance to get along with Yoko. Shocked by the sudden change, Sun releases his anger, by taking revenge against Yoko.