The gang is sent to the Wilton Reform School after they are unjustly convicted of stealing a truck. Bill Collins, brother of co-leader Danny, becomes involved in a killing and, while also innocent, is convicted and sentenced to death. Through a series of events, Muggs, Glimpy, Danny and the rest of the gang, learn that Knobby, a henchman of Luke Manning, knows something about the murder.
| Actor | Role |
|---|---|
 Leo GorceyMuggs McGinnis | Muggs McGinnis |
 Bobby JordanDanny Collins | Danny Collins |
 Huntz HallGlimpy Stone | Glimpy Stone |
 Billy GilbertKnobby | Knobby |
 Guinn 'Big Boy' WilliamsLuke Manning | Luke Manning |
 Douglas FowleyBill Collins | Bill Collins |
 Joan BarclayAnn Mitchell | Ann Mitchell |
 Warren HymerDratler | Dratler |
 Ann DoranDorothy Melton | Dorothy Melton |
 Jack MulhallJim Barnes | Jim Barnes |
 Gabriel DellCharlie Manning | Charlie Manning |
 Sidney MillerCharlie Horse | Charlie Horse |
 David GorceyPeewee | Peewee |
| BBobby StoneChalky Jones | Chalky Jones |
| DDick RyanJed Miller | Jed Miller |
 Benny RubinSecond Waiter | Second Waiter |
| BBill LawrenceSkinny | Skinny |
 Stanley BlystonePoliceman (uncredited) | Policeman (uncredited) |
 Frank O'ConnorReformatory Guard (uncredited) | Reformatory Guard (uncredited) |
 Charles SullivanPoliceman (uncredited) | Policeman (uncredited) |