Though just a boy of 8, villainous Rin is wreaking havoc among the group of teenagers who remember a past life on the moon. In his quest to destroy the moon base, Rin will stop at nothing to learn the computer passwords of his former compatriots on the KK research team. To force Daisuke, the moon mission's leader, to reveal his password, Rin takes his younger brother hostage. The others desperately try to dodge Rin and are especially mindful of keeping Alice safe. But how long can they keep one step ahead of him?