Inventor Harry Harper travels to the South Seas, where there is buried treasure belonging to a girl, Beverly West. Naturally, others are after the loot, and Beverly's father is being held captive by cannibals until she returns to them with a pearl that belongs to one of their idols. The climax consists of Harper saving Beverly from a safe which has been lowered into the sea.
Harry Houdini
as Harry Harper
Jack Brammall
as Tom Starkey
Lila Lee
as Beverly West
Wilton Taylor
as Job Mourdant
Eugene Pallette
as Guy Mourdant
Ed Brady
as Captain Black
Taylor N. Duncan
as First Officer Murphy
F.A. Turner
as Mr. West
Rosemary Theby
as Stella Mourdant
Frank Bonner
as Chief Bakaida
