Junta has a problem: he's a girl-allergic loser! All this changes with the arrival of Karin, a gorgeous time-traveler who transforms him into the Mega-Playboy, the suavest girl-magnet around. Suddenly, Junta's wildest dreams have come true, and all the prettiest girls in school have fallen in love with him. With so many adoring fans, mayhem is sure to follow, and Junta finds himself in the center of one hilarious romantic mishap after another. But the transformation is dangerously unstable, and if Junta can't unravel the time traveler's mystery, his life (and the fate of the world) will never be the same!