The Wiseguys, an up-and-coming rock band led by Toney (Corey Haim) and poised for super stardom, are shooting their first music video on the lot of Hollywood's most famous studio. The band, it's director (Charles Fleischer) and their agent (Priscilla Barnes) plan on working the ambiance for all it's worth. Soon after the filming begins, the band, crew, their girlfriends and groupies all find themselves as the target of a masked psychopathic killer.