The series follows the twisted fantasy of Kousuke, a young man who gets his hands on a mysterious ring that grants him the power of absolute sexual hypnosis. His new home life with his voluptuous stepmother, Misaki, and two gorgeous stepsisters, the defiant Akane and the shy Yukari, becomes his personal playground. Kousuke wastes no time testing the ring's mind-breaking capabilities, first cornering Yukari and fucking her innocent cunt senseless. He then moves on to the feisty Akane, shattering her resistance and turning her into another one of his cum-hungry toys. Finally, he conquers his mature stepmother, Misaki, completing his incestuous harem. The narrative devolves into a non-stop series of depraved orgies where Kousuke commands his new family slaves to satisfy his every carnal whim. He orchestrates filthy threesomes and foursomes, forcing them to take his cock in every hole, creampieing them repeatedly until their minds are nothing but a blissful, obedient haze focused solely on servicing his lust.