Mayu works as a nursery school teacher in a provincial city. Although she loves her job, her low salary makes life difficult. One day, an elderly acquaintance proposes becoming her sugar daddy, offering a mistress contract, and she agrees to a gonzo shoot in a hotel. The old man becomes instantly aroused at the sight of her naked body. Despite being covered in his saliva, Mayu can't withstand his persistent, lewd advances and eventually gives in. Her big, beautiful breasts—often admired by parents of her students—jiggle wildly as she succumbs, her expression shifting from a sweet caregiver's smile to a slutty, aroused face. Watching her writhe in ecstasy, completely immersed in her depraved state as a babysitter, is an absolute must-see.