The Chopper bunch is chasing Wheelie and they pass by a building with the name of Dr. Crankenstein above the door. Inside, Dr. Crankenstein has created a monster that he calls Mr. Moto. The monster is lacking one thing, a brain. Crankenstein spots Wheelie and figures that he can use his brain. He creates a rainstorm and forces Wheelie and the Chopper bunch into his building.
The Chopper bunch chases Wheelie and Crankenstein trips a trap in order to capture Wheelie, but he accidentally catches Chopper. The motorcycles don't have any idea what happened to Chopper and they think he's just disappeared and they ask Wheelie for help.
They find Chopper just as Crankenstein is about to switch his brain into Mr. Moto. Chopper grabs Wheelie and switches places. Crankenstein mentions how talented Wheelie is and Chopper gets jealous and starts to dance. Crankenstein has second thoughts and shocks Chopper and steals his dancing ability. Everyone runs out and Crankenstein says that he and Mr. Moto are going to get into show business.