Badjao.

Hassan, the son of a tribe chief of the Badjaos, a pagan, sea-dwelling Filipino tribe, meets and falls for Bala Amai, the niece of the chief of the Tausugs, an Islamic, land-dwelling tribe. Although the Hassan is willing to give up his lifestyle for Bala Amai and vice versa, the Tausugs plot to break up the union of the happy couple.