Shinpei returns home for his friend Ushio's funeral. She apparently drowned, but something is off.

A giant shadow massacres everyone at the Hitogashima Summer Festival and engulfs the whole island.

Tokiko, Sou's younger sister, reveals she has been offering corpses as food to Hiruko.

A seventy-year-old photograph reveals the truth.

Shinpei despairs over Hizuru's death. However, hope is on the horizon.

After a fierce battle, Shinpei takes the place of an exhausted Ushio and confronts Shide.