Young Prince Kevin has runaway from his home and accidentally gets transported to the Fright Zone, where he is put under a spell by Shadow Weaver and used against the Rebellion. Not only is he the cause of the ruined carnival in Twigget Village, but also the capture of Flutterina. So to redeem himself, he goes with She-Ra to rescue her - and breaks Shadow Weaver's spell himself (thetvdb.com)