Dar, the Beastmaster, learns of a previously-unknown half-brother, Arklon, who plans to conquer the land with the help of a sorceress named Lyranna. Both escape to present day Los Angeles through a dimensional portal. Dar and his animal companions, Ruh, Kodo, Podo and Sharak, must follow them through the portal and stop them from obtaining a neutron bomb. During his visit, Dar meets a rich girl named Jackie Trent, and they become friends.