A man and a woman and 3 children start to sail around the world. They are shipwrecked near an uninhabited isle. This island is full of wild animals and it is very dangerous for them in the begining. They live through a lot of wonderful adventure together and they become a big family.
Hassan, the son of a tribe chief of the Badjao's, a pagan, sea-dwelling Filippino tribe, meets and falls for Bala-amai, the niece of the chief of the Moros, an Islamic, land-dwelling tribe. Although the Hassan is willing to give up his lifestyle for Bala-amai and vice versa, the Moros plot to break up the union of the happy couple.