Junpei Makabe is the successful General Manager of a major advertising agency. Now in his forties, he navigates a life of cynical comfort: he hasn’t touched his wife in five years and feels no guilt about his office affair. After all, isn’t that just how the world works?
​However, a single phone call shatters his routine, dragging him back to the memories of his twenties. It begins with a flashback to a college entrance exam, where Junpei caught a plain, bespectacled girl cheating. When he tried to confront her, she silenced him with a shocking proposition: her body in exchange for his silence. In a moment of madness, Junpei lost control. It was a first experience for them both—raw, unexpected, and seemingly fleeting.
​Yet, fate had other plans. At university, Junpei encounters her again. The girl, Ai Morishita, has undergone a stunning metamorphosis, trading her rustic look for sophisticated beauty that turns heads on the street. Along with the naive Yuji, the troubled Rikiya, and Ai’s friend Seiko, they form an inseparable circle. Set against the vibrant backdrop of 1980s Tokyo, the group dives into a life of nightclubs and freedom. Through tennis camps, mischievous pranks, and late-night fights, they forge a bond that defines their youth. It is a nostalgic portrait of a time when everything was new, and every moment felt infinite.