I divorced my ex-wife Rie because of incompatible personalities. I thought I would never see her again, but by chance we met again. After eating out with my current wife, on the way home, she gasps and runs off at a trot. There she is, her ex-boyfriend, with Rie beside him. My wife happily invites the two of them to her house and they start drinking. Time passes without us knowing about our relationship, and my wife and her ex-boyfriend end up drunk. I stare at Rie, remembering our life back then...