Heterosis – a mysterious virus that turns gay men heterosexual – is raging through the streets of Paris, worse than Covid ever did. The Parisian gay scene is, naturally, the number one victim of this disease, and Jim, the muscular ruler of the Gym Queens, is not spared either. From the Pride King of Paris, he suddenly becomes the social pariah of the country. Only Lucien, a recently outed young man with more heart than muscle, remains fighting by his side! Together with Jim, they must race against time to find a cure before the disease completely wipes out the community that once adored them.