Hiroshi Kuzumi and his wheelchair-bound younger sister, Mana Kuzumi, arrive in the town of Joga. As if settling in to a new place isn't hard enough, the school's class president doesn't like Hiroshi.
Hiroshi's father shares a bit of lore with his children about Joga and the man-like wolf species believed to have lived there.
What was supposed to be a fun-filled picnic turns into a visit to the hospital.
After a series of strange events, Sakaki reveals an unfortunate reality: that a pack of murderers are roaming freely in Joga.
It is said that Issei transferred to another school, but it seems that something far graver has happened.
Isuzu misses class; meanwhile the villagers argue about that hassaku shortage.
Concerned over Isuzu's continued absence, Hiroshi divulges her theory: Joga wolves can assume human shape.
Kaname's theory is proven correct. Later, Nemuru is placed on house arrest for helping Hiroshi.
Hiroshi pressures Nemuru for answers, and she finally reveals Joga's secrets to him.
Isuzu finally recovers and is dealt another blow. Hiroshi recognizes a familiar face as a priestess to the white wolf.
Sakaki, who was once a friend, soon becomes a foe.
Just when things start to become settled, Hiroshi finds himself caught up in another supernatural battle.