Henry, a young Polynesian native is cast out by his tribe and set adrift in a canoe. He is close to death by the time he gets picked up by a freighter and returned to civilization. While in the care of a Catholic priest called Bishop, he befriends a boy named Adam, also living with the Bishop and together they devise a plan to return to Henry's island to rescue Henry's fianc e. Seeing an opportunity for missionary work the Bishop joins the youngsters on their quest. But first they must find this illusive island in the vastness of the South Pacific while also navigating conflicting forces surrounding them.