In a dimly lit room, the abnormal sight of her beloved daughter crawling with a collar around her neck. Although a slight sense of wrongness crosses the mind of the mother, Kurashiki Reika, a sweet voice eroding her brain forcefully rewrites her sanity, whispering, "That is the correct way." The moment she blurts out, "Mother will show you how it's done," the once-proud mother strips off her own clothes, gets on all fours right in front of her daughter, and begins a lewd "practical instruction" of service in a completely shameless state.
Days pass with relentless personal instruction from the man called the instructor. Though frustration stemming from her original pride occasionally surfaces on Reika's expression, the suggestion of obedience rooted in her deep psyche remakes her voluptuous body into a slave to pleasure. Contrary to her will to resist, her body reacts sensitively to the given pleasure, dripping endless love juices as she gradually falls into complete submission to the man.
Then, the point of no return arrives. In a vulgar space where wads of cash flutter in the air, Reika is surrounded by several filthy men, her exposed skin groped endlessly. With her eyes completely losing focus and drool sloppily dripping from her mouth, not a single trace of her dignity as a mother remains. Accepting the continuous violation of her body, she sinks deeply into a never-ending spiral of hypnosis.