He works as a manager at a major company and married a beautiful wife, Rei, a former receptionist, a few years ago. Their life as a married couple is going smoothly, and this is what "happiness" really means. However, his junior colleague, Zuo Ci, whom he Ke'ai on, is a twisted Amateur virgin despite his age. In order to share his happiness, he invites her to his house for a dinner party. In the midst of a drunken stupor, he suggests to Rei that they have a simulated married experience before leaving the place... But from that day on, their relationship became strangely distant...