an ancient chinese scroll is stolen from a museum in los angeles and teenage don pringle (kirk) arrives on catalina island simultaneously. although approximately half of the film involves swimsuit-clad adolescents dancing on yachts in several different dance montages, pringle and his friends investigate the scroll's theft and discover that the parents of one of the boys are responsible—also while attempting to woo a mysteriously depressed young woman katrina corelli (ulla strömstedt) from her vaguely threatening fiancé angelo (lyle waggoner). after wrestling the scroll away from angelo and his cohorts, bent on more dangerous results (in an underwater scuba diving action scene), the boys secretly return the scroll to the museum to the relief of the repentant parents.