It's the last planet fall for Brianna's Call. Trapped between worlds, Billy is forced to watch Julie and Mouse struggle with Durf as he winds up on a planet full of nymphs. Enjoying himself to the fullest, Durf joins the team as Mouse falls victim to the uni-mind and Julie merges with a giant millipede. Able to see both worlds, Billy is helpless as the guys are nearly sacrificed by a group of evil Durfs and there is a problem with his children. One of them keeps disappearing. It takes a trip through time and several marriage proposal interruptions for Billy to free himself and try to save the day.