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.
| Actor | Role |
|---|---|
 Spencer TracyPat Jackson | Pat Jackson |
 Fay WrayWildeth Christie | Wildeth Christie |
 Ralph MorganLi Po Chang | Li Po Chang |
 Eugene PalletteLobo Lonergan | Lobo Lonergan |
 Herbert MundinLarsen | Larsen |
 Reginald MasonWilliam Christie | William Christie |
 Arthur HoytVan Emery | Van Emery |
 Albert ContiRigaud | Rigaud |
 Maude EburneMrs. Glissen | Mrs. Glissen |
 Wilhelm von Brinckenvon Uhlenberg | von Uhlenberg |