The S. S. Arcturus sails from Shanghai to San Francisco, and Dr. Jim Craig takes the post of ship's physician in order to be near Ann Grayson, the ship's nurse. Chief Engineer 'Crusher" McKay also has his eyes on Ann, and this brings an immediate conflict between the two men. When an epidemic breaks out below decks, Craig tells McKay the engine-and-fire rooms must be put under quarantine, but all of Craig's efforts to keep the disease from spreading are opposed by McKay.
Victor McLaglen
as Crusher McKay
Chester Morris
as Doctor Craig
Wendy Barrie
as Ann Grayson
Alan Hale
as Gallagher
Barry Fitzgerald
as Britches
Allan Lane
as Bilson
Halliwell Hobbes
as Captain Mathews
Cy Kendall
as Deadeyes
Paul Guilfoyle
as Wishart
John Wray
as Metcalfe
Emory Parnell
as Olaf
Adia Kuznetzoff
as Silvio
