A depressed, obese woman tries to lose weight in order to win back her ex-boyfriend with the help of a fellow Hong Konger whom she met in Japan.

Cheung Sung-bong is a highly respected cop with a long history of success in dangerous cases. However, his past soon comes back to haunt him when a former protégé resurfaces, seeking revenge.

A showdown between a man who commits crimes in the name of "savior", and the police.