He and his wife Ai have been married for three years, and work to pay off the mortgage on their house. However, they haven't been able to secure any contracts at the real estate agency where they work, and if they don't get any this month, they'll be fired. Then, Ai is asked by a middle-aged man, Ozawa, to look around the property. He immediately shows her around the property, but when he sees the sweat on Ai's nape, Ozawa uses the promise of a contract as bait to slowly and thoroughly lick and devour Ai's sweaty body... Until the day the contract is signed, no one knows when it will be...