Captain Jim Knight, and his crew Roxy, Tula, and a chimp named Salty sail the
South Seas in search of adventure. They discover a criminal gang has taken over a small island, forcing the native pearl divers to dive beyond safe limits. After capturing the three-man gang, Knight takes them to
Tahiti for trial where the men escape and force Knight to sail them to New Zealand. Knight subdues them again but this time a minor French magistrate is sent to the island to try them there. The magistrate joins the criminals when a native boy locates the wreck of a lost ship containing a Burmese king's treasure. ==Cast==