Tanaka loses his job, divorces, and is thrown out of his home before moving in with his brother's family. Now requiring care, he is assigned Sumire, an adult student role-playing as a trainee who studies caregiving. He sees her only as a sexual target, and she angrily condemns him when she notices. Desperate to control her, Tanaka obtains a hypnosis device and rewrites her personality, turning the aspiring caregiver into his personal sex servant and trapping her in a life exploited by the older man.