Rittkrai is a legend in Thai action cinema. The director of Born to Fight and fight coordinator for such classics as Ong Bak and Chocolate, he was the star of many action films in the '70s and '80s, and is famously a mentor to some of the top action superstars working today, including Tony Jaa (Ong Bak), Dan Chupong (Dynamite Warrior) and Jija Yanin (Chocolate). Bangkok Knockout features a range of martial art disciplines. A group of 'fight club' pals whose styles vary from Muay Thai and Capoeira to Kung Fu and Tai Chi must fight for their lives when one of their friends is kidnapped.