Ikuto TÅhÅin goes overboard on a ship and washes up on an island completely inhabited by women. After meeting one of the girls, Suzu, Ikuto gets ambushed by several other girls who want him as their partner, and they will try anything to obtain him. Eventually, Ikuto tries to leave the island, but discovers the island is surrounded by whirlpools, and thus it is impossible to leave the island.