One year into her marriage, AIKA finds herself unable to warm up to her father-in-law, who recently started living with them and whom she sees as a lecherous old pervert who thinks he's still attractive. One day, when her husband suddenly leaves on a business trip, leaving her alone with her father-in-law, he slips an aphrodisiac into her tea and forces her to drink it. Despite her disgust and anger, she repeatedly orgasms from his cock. From then on, he relentlessly pursues her, smothering her with sticky, lewd caresses that gradually arouse her body. The memories of the drug and her father-in-law's cock become impossible to forget. No matter how much she hates him, no matter how gross he seems, once she's experienced that pleasure, there's nothing she can do to resist.