A mother and daughter, devoured as female slaves, fall into a trap and infiltrate the investigators' living hell. The tale of the madwoman-type mantis family, ATID-552.

The Great Mantis Clan, a matriarchal family where women are the heads of households for generations, operates like mantises, using men only when they are ready to conceive and then disposing of them. The clan consists of Hana, the patriarch of a wealthy family who lives an elegant life, and her daughter, Minori. To arrest them, an investigator infiltrates alone…