Julia and Kenichi, married six months, face issues as Kenichi neglects their sex life due to work stress and frequent trips. Their happiness is marred only by this. Kenichi buys an aphrodisiac to boost desire, planning to use it after his next trip to make up for neglecting Julia. He mixes it in tea and stores it in the fridge. While he’s away, Julia finds the tea, thinking it’s a gift, and offers it to her father-in-law, who’s temporarily staying due to his damaged house. Under the drug’s effect, their restraint fades, replaced by raw desire. They fuck wildly, filling the house with lewd sounds. It’s Julia’s best sex ever. Even after the drug wears off, she can’t forget her father-in-law’s huge, hard cock pounding her. When Kenichi’s gone, she sneaks to him, begging him to tame the growing sexual beast inside her.