Shindou Ranmaru has just graduated from the police academy and is assigned to the Tokko Special Mobile Investigation Force. On the day of his graduation, he encounters the half‑naked woman he has been dreaming about, Rokujo Sakura, who works for a secret unit within Tokko known as the Special Public Safety Task Force. Shindou joins Tokko to avenge his parents’ death and investigate the mysterious mass murder of residents in his hometown of Machida. Meanwhile, bottomless pits begin to appear across Japan, releasing mysterious creatures. Could these events be linked to the Machida massacre?