Gerald Westfield is shipwrecked near Papeete in French Polynesia while on vacation. After floating in the ocean on a makeshift raft, he ends up on a small tropical island.

Several months of survival on the island pass before Gerald discovers the entrance to another dimension in the back of the cave that he had been occupying.

Gerald passes through the portal and meets a family in this new world. While learning their language and customs, he falls in love with the daughter of his newfound friends.

The country in this new dimension is at war, and as the battle draws closer,...