A bunch of waterfront youths pursue the Sea Raiders, a gang of saboteurs.

Billy Halop
as Billy Adams

Huntz Hall
as Toby Nelson

Gabriel Dell
as Bilge

Bernard Punsly
as Butch

Hal E. Chester
as Swab

Reed Hadley
as Carl Tonjes

William Hall
as Brack Warren

Mary Field
as Aggie Nelson

John McGuire
as Tom Adams

Marcia Ralston
as Leah Carlton