Juugo Shounen Hyouryuuki: Kaizokujima de! Daibouken

Ryuutarou Nakamura's posthumous film based on Jules Verne's 1888 novel Two Years' Vacation. A group of youngsters find themselves adrift at sea, and after a terrible storm they are cast upon a deserted island, where they must learn to get along with each other in order to survive.