Min-cheol and Joo-hyeok gather to celebrate the upcoming marriage of their senior friend, Yun-seong. While waiting for the bride-to-be to arrive, the two men casually swap explicit stories about their past encounters and memorable flings. The atmosphere takes a sharp, awkward turn when Yun-seong’s fiancée finally arrives—and the men instantly recognize her as a woman they both intimately know from their past.