When her husband, Satoshi, who works at a credit union, is transferred, she buys her dream home. In his new home, Satoshi devotes himself to his work and is busy selling loans to local businesses. Meanwhile, Nishimura, the real estate agent who helped Satoshi when he bought his house, warns him that the manager he approached for a loan is addicted to gambling. After narrowly avoiding the deal, Satoshi invites his benefactor to his home and they become friends with each other's families, including Nishimura's wife, Ayaka. ...Nishimura soon gets a taste for it and makes advances on Ayaka, acting like he's doing her a favour, and eventually...