One year after the events of the first film, it is revealed that kickboxing brothers Kurt and Eric Sloane have been killed by Tong Po in Thailand. David Sloane (Mitchell), the last surviving brother, struggles to keep the family's Los Angeles kickboxing gym afloat. He offers free kickboxing lessons to local kids, often demonstrating a technique he calls the "rock and the river" which allows him to defend against attacks while blindfolded.