It's Michelle's 3rd birthday, and the guys have decided to throw a ""circus"" birthday party for Michelle, complete with clowns and other things seen in circuses. Before the party, Danny complains about a problem with his car, and Jesse agrees to fix it. Jesse can't fix it, so he takes Stephanie and Michelle out to a gas station with him to have it fixed. After the car is fixed, Jesse and the girls decide to visit the restroom before they leave, and during this time, Elmer, the mechanic, locks the station up without knowing that Jesse, Stephanie, and Michelle are still inside. Michelle's friends arrive at the house, and Danny, Joey, and D.J. try to keep them busy, in hopes that Jesse, Stephanie, and Michelle will be home soon. At the gas station, Jesse and Stephanie throw a makeshift ""circus"" party for Michelle, then Elmer returns three hours later, and he's surprised that he locked Jesse, Stephanie, and Michelle in the station. Elmer unlocks the station to let them out. By this time, Mi