The series follows Kousuke, a husband who grows suspicious as his once-plain wife, Mika, inexplicably becomes stunningly beautiful and develops an insatiable sex drive. His investigation uncovers a horrifying truth: Mika is undergoing a special 'beautification treatment' at a shady clinic run by a depraved director. This 'treatment' involves her being systematically and brutally gangbanged by multiple strange men. The entire series chronicles her debaucherous transformation from a modest housewife into a shameless, cum-craving nymphomaniac. Viewers witness every explicit detail of her degradation, from her first hesitant encounter to eagerly presenting her holes for relentless pounding. She gets fucked in every position imaginable, her body used as a public toilet for endless loads of sperm. The climax sees her completely broken, a mindless sex slave who gets off on her husband's cuckolded tears as she's being bred by a room full of strangers, her mind and body irrevocably corrupted by pure, unadulterated lust.