ICPO investigators Kei and Atsuko hunt a predator responsible for a series of brutal international rapes, unaware that the crimes are linked to a sinister medical conspiracy. As a secret organization tests a volatile drug that triggers primal aggression, a desperate athlete named Kenji becomes an unwitting subject. The investigation soon converges on Kaizear Pharmaceuticals, revealing a terrifying connection between the experimental drug and the violent attacks.
Kenji and his allies investigate Kaizear Pharmaceuticals, uncovering sinister experiments involving the human genome and anti-aging substances. As Jun hacks into the company's secure database, Kei and Atsuko infiltrate the facility to rescue Yuko from the sadistic Mari. The mission culminates in a shocking encounter with a monstrous creature that shares a mysterious bond with Yuko, revealing a deeper and more dangerous plot.