Bob Randall, temporarily in command of the Coast Guard vessel Niobe, expects a promotion and the captaincy of his ship. Instead, he is replaced by Lieutenant Mays, son of the area commander. Mays is afflicted with a fear of the sea, although he has served well in Coast Guard aviation. His father, however, thinks Mays can overcome his fear by taking command of the Niobe. When seal poachers kidnap Bob Randall's girlfriend Connie, Bob and Mays disagree about the proper means of rescuing her and capturing the seal poachers. When Mays's inexperience and phobia foil their attempts at rescue, Bob comes up with his own plan.
John Wayne
as Bob Randall
Nan Grey
as Connie Dawson
William Bakewell
as Lieut. Commander Mays
Fuzzy Knight
as Hogan
Russell Hicks
as Phil Morgan
George Irving
as Commander Mays
Lotus Long
as Marie
Harry Worth
as Nick Austin
Ernest Hilliard
as Reggie Winton
George Humbert
as Johnny 'Hop-Scotch'
Ethan Laidlaw
as Louie
Chester Gan
as Oil
