On the Parisian gay scene, Jim is the king of Gym Queens, the sexiest and most coveted community on social media. One day, he realises he’s been infected with Heterosis, a strange virus decimating the community and turning gay men into… heterosexuals! Jim loses his throne and is abandoned by his entire entourage. All but one follower: Lucien, a scrawny young virgin. Together, they set off on a journey across the Marais (the parisian gay village), in search of the mysterious Doctor Ragoult, who claims to have found a cure for the virus. This cure could not only save Jim, but also prevent the extinction of homosexuality.