In 1897, a missionary’s widow and her two young children find themselves marooned on a beautiful island in the South Pacific. As they mature, the youngsters discover both the positive aspects and potential hazards of living on their secluded home, including matters of reproduction. Milla Jovovich and Brian Krause portray the pair of adolescents, with Nana Coburn also appearing in the cast. “Return to the Blue Lago…