Yuri, who is married, goes to a school reunion even though her husband worries about it. At the event she runs into her former boyfriend Tatsuhiko. He keeps drinking and flirting with her, while Yuri frets over his reckless habits and poor control of alcohol. Even so, she follows him to the restroom when he feels ill, only for Tatsuhiko to seize the chance to seduce her. He had been feigning intoxication so he could be alone with Yuri.
