Kohachi Inugami, a detective specializing in supernatural matters, is hired to investigate some animal mutilations in a rural village. His investigation leads to an unusual boy, nicknamed “Dorotabo,” who is ostracized by the other villagers.

The office members help a love-stricken client track down the object of his affection, and Kabane learns a lesson about love. Akira decides to pattern himself after Kabane, and the two are assigned to investigate a deadly case on the Shibuya River.

Kabane, Shiki and Akira embark on a dangerous mission set up by Mihai, breaking into a company controlled by a trio of kanonba (mosquito Kemono) sisters to investigate it. When discovered, they must fight it out, but something comes over Shiki.

Shiki corners the man who tormented his mother. However, at the last moment, he is attacked by a pack of Kemono and finds himself in a pinch. Separated from Inugami, Kabane and Shiki are surrounded, and must confront the pack of Kemono themselves.

When Akira runs away from the office over a trivial dispute, he unexpectedly bumps into his long-lost brother, Yui. Akira is delighted, but Yui behaves strangely, as little by little, the events of the past in their snowy home village are unraveled.

Nobimaru has a tough battle against Yui, who is using the power of the nullstone, until Kabane leaps in to help him. Kabane uses Nobimaru’s tactic and gives his all to beat Yui’s freezing power, as the battle over the nullstone finally reaches its climax!