Aya, Haru and Chiyoko are the only females in Toshima. The three have been in Toshima for over a year and have no problem surviving in the deadly game of Igura. But when Aya, the youngest of the group wanders off on her own. The others are frantic to find her before anyone else does. But Aya, she ends up in the strangest places and with the weirdest friends.