A woman named Barbara Freeman finds out she's got a braindisease. It's hereditary, but her husband Robert won't tell their son Michael, he doesn't want him to worry. But Michael hears it anyway, and steals Baxter's airplane. The plane is grounded, and finally Jack manages to talk him down. DJ wants to start a disco to get the youngsters calm, they've caused lots of trouble. Jack lets him build a gym. Jack's boss Kevin has heard complaints about the youngsters and shows up. He decides to transfer Jack, but when he sees how Jack talked Michael down from the plane he changed his mind. Finally DJ gets his disco and celebrates with a huge party!