An all-out escape drama set on a desolate island in the open sea! Five pairs of siblings who washed up on a deserted island are forced to play a game of tag in the nude! Full-speed dashes on the beach... If caught, they face lesbian punishment, and even if they escape, incest awaits!! Full of lively natural scenes featuring breasts, vaginas, and full-body detailed drawings! A struggle for the escape boat amidst incestuous insemination survival... Which sibling pair will last until the end and escape the island!?