Successful novelist Stéphane Belcourt returns to his hometown for the first time since his youth. A local celebrity, he has been invited to attend the 200th anniversary of a cognac brand as its new brand ambassador. Shortly after his arrival, he discovers that company representative Lucas Andrieu is the son of his first great love, Thomas. The encounter awakens vivid memories in Stéphane of a passionate, secret love during a shimmering summer.