As a
yacht sails into an isolated tropical
island chain somewhere in the Pacific Ocean, a large number of islanders in
outrigger canoes paddle out to greet it. The islanders dive for trinkets the yacht's crew throws them. A shark arrives, setting off a panic as much with the crew as the islanders. Johnny Baker attempts to catch it hand casting with a large hook, but is yanked overboard when a loop of line attached to the impaled shark cinches around his ankle. Comely native swimmer Luana cuts through the rope with a knife she had earlier been thrown as a trinket, saving his life. At a welcome banquet that night, Johnny sees young island men ritually carry off young maidens, and seeks to do the same with Luana, but is stopped and castigated by the local chieftain, her father. After intimately swimming, they swiftly fall in love. Later, the yacht moves on, but leaves Johnny on the island for an adventure. He discovers Luana has been promised to another man – a prince on a neighboring island. She is spirited away to this island for the
arranged marriage, while Johnny is waylaid. During a native dance, Johnny has made his way to the island in the nick of time, runs into a circle of fire, and rescues her as the natives kneel to the fire. Johnny and Luana then travel to another island where they hope to live out the rest of their lives. He builds her a house with a roof of thatched grass. Their idyll is smashed when the local
volcano on her home island begins to erupt. She confesses to her lover that her sacrifice alone can appease the mountain. Her people take her back. When Johnny goes after her, he is wounded in the shoulder by a spear and tied up. The people decide to sacrifice both of them to the volcano, but on the way, the couple are rescued by Johnny's friends and taken aboard the yacht. Johnny's wound is tended to, but his friends wonder what will become of the lovers. Luana does not fit into Johnny's world. When Johnny is sleeping, Luana's father demands her back. She goes willingly, believing that only she can save her people by voluntarily throwing herself into the volcano. ==Cast==