Three years into our marriage, my wife Ai works alongside me to pay off our mortgage. But she cannot close a single deal at her real estate agency, and she will be fired if she fails again this month. Then a middle-aged man named Ozawa specifically requests her for a property viewing. As Ai begins the tour, he notices sweat beading on the nape of her neck. Using the promised contract as bait, Ozawa slowly and obsessively licks and devours her sweaty body—and keeps exploiting her until the day he may finally decide to sign.