Reika is a career woman who takes out her anger on a boring cleaning man. When the man gets fed up with her excessive nagging, he forcefully rips off her clothes and roughly plays with her body. Her pride is shattered when the man she looked down on performs cunnilingus on her in an indecent position... When the man thrusts his finger into her pussy, Reika trembles in fear and wets herself. Reika is forced into a deep kiss and spits out, and the man, angry at this, fucks her raw with his huge dick like a lethal weapon! He continues to torture Reika as she is raped and cums inside her, and the man takes a picture of her crying and pitiful appearance, and his brutal acts escalate even further... Reika is threatened with rape images and becomes obedient to the man, who locks her in his dirty room and makes her his sex slave. Tied up with hemp rope, Reika moans as she is subjected to merciless deep throating, but becomes as listless as a doll. Pursuing only sexual pleasure, she becomes a female, lewdly opening her pussy and seeking the man herself... In the end, Reika begins laughing like crazy while having sex, and transforms into an insane woman who is beyond the man's control, and is abandoned and kicked out of his room...