Brothers Johnny and Adam are coasting through a fun surfer existence in Los Angeles when they are suddenly accosted by a band of ninjas. A mysterious warrior comes to their aid, later telling the brothers that they are the royal heirs to the throne of Patusan, an embattled island under the rule of a tyrannical leader. After discovering their untapped ninja skills, Johnny and Adam agree to travel to Patusan to overthrow the current monarchy.
