With the death of her father, a daughter reluctantly returns to the family temple hidden in the mist covered mountains where dark and forbidden secrets dwell.

The ASH (Abnormal Species Humanoid) first appeared in the beginning of the 1980s. They looked like humans, but they weren't. The ASH can be identified by a pulsating appendage on their back; it resembles an embossed root clutching the spine. These humanoid creatures have the power to destroy telepathically via a deadly impulse which hemorrhages brain cells. Their goal is to populate the planet via random sexual contact and then take control. There are special police units who fight the ASH. This top secret organization is called The Society For Environment Protection and its agents are called psychosists

Jin Kaito makes a living charming women with flair and finesse. But his game hits a snag when Reiko, a beautiful woman actively searching for a husband, falls for him at first sight. Suddenly, the hunter becomes the hunted! Things get even more complicated when Jin crosses paths with Tatsuya, a Reiko’s childhood friend and an eager rookie hoping to team up. Reluctantly forming a duo, the two head out for fresh targets and immediately stumble into a dangerous brawl with a member of the fearsome Shiga crime syndicate. Now, Reiko is caught in the crossfire, and Jin must put more than just his charm to the test.