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.
Leo Gorcey
as Terrence Aloysius 'Slip' Mahoney
Huntz Hall
as Horace Debussy 'Satch' Jones
Robert Lowery
as Skid Wilson
Jane Easton
as Bobbie Lane
Leon Belasco
as The Professor
Bernard Gorcey
as Louie Dumbrowsky
David Gorcey
as Chuck
Benny Bartlett
as Butch
Richard Benedict
as Tony, the driver
Murray Alper
as Red, the mechanic
Tom Hanlon
as Race Announcer
Mona Knox
as Party Brunet, dancing with Slip
