Ko Chun, a renowned gambler, loses his memory in an accident and starts behaving like a child. Little Knife, an amateur gambler, offers him shelter and realizes that he has a penchant for gambling.

The Proud Twins is a mainland China and Hong Kong co-produced television series directed by Wong Jing, starring Dicky Cheung, Nicholas Tse, Fan Bingbing and Yuan Quan in the leading roles. The series is adapted from Gu Long's novel Juedai Shuangjiao. It was first broadcast in 2004 in mainland China.