In the 1920s Pat Jackson destroys a Chinese post and is discharged from the Navy. Li Po Chang hires him to run a gunboat up the river. He drops Wildeth off at a mission for safety, but when his boat returns the mission is being attacked by communists.
Spencer Tracy
as Pat Jackson
Fay Wray
as Wildeth Christie
Ralph Morgan
as Li Po Chang
Eugene Pallette
as Lobo Lonergan
Herbert Mundin
as Larsen
Reginald Mason
as William Christie
Arthur Hoyt
as Van Emery
Albert Conti
as Rigaud
Maude Eburne
as Mrs. Glissen
Wilhelm von Brincken
as von Uhlenberg