He Is My Brother | 1975
Two young brothers, Randy and Jeff Remington, live through a shipwreck off the Hawaiian coast. When they make it to land, they find themselves in a leper colony run by a priest. At first, the boys are horrified by their surroundings, but learn campassion and begin to help care for the patients. But a native man named Kahuna wants the brothers off the island, even more so after his daugther Luana falls in love with Jeff. So Kahuna orders his underlings to kidnap Randy and make him a sacrifice to the volcano, and Jeff and Luana do their best to save him.