Slip has entered the Boys' rattletrap car in a souped-up jalopy race, but has no chance of winning until Satch, with the aid of a scientist acquaintance, comes up with a chemical concoction that acts as a super-fuel; but a rival entrant in the race learns of this and tries to get the formula for himself.

• Monogram Pictures
• Leo Gorcey
• Huntz Hall
• Robert Lowery
• Jane Easton
• Leon Belasco
• Bernard Gorcey
• David Gorcey
• Benny Bartlett