After repeatedly failing to smuggle drugs into the Philippines, yakuza soldier Onota (Bobby Garrovillo) slips a laced cassette tape into the pocket of a stranger on the plane: pop singer Johnny (Christopher de Leon). This singular deus ex machina sets the Yakuza, the Filipino-Chinese Triad, and a fake convent of nuns onto Johnny's tail. Determined to figure out why everyone is chasing him and his friends - bandmates Nonong (Jay Ilagan), Nancy (Sandy Andolong) and newfound love interest Melanie (Charo Santos) - the quartet dress up and go undercover. When the lunatics come together, a cartoonish rock opera ensues!