After writing for Cahiers du cinéma, a young Jean-Luc Godard decides making films is the best film criticism. He convinces producer Georges de Beauregard to fund a low-budget feature, and creates a treatment with fellow New Wave filmmaker François Truffaut about a gangster couple. The result? Breathless, one of the first features of the Nouvelle Vague era of French cinema.

A fast-food restaurant in the evening, with two employees, Lou and Malik. In their twenties, these college friends are about to achieve their dream: buying a food truck, which they will call "Les burgers volants" (The Flying Burgers). But the evening will reveal the limits of their affection. Between betrayals, revelations, and the end of a love story, no one knows how their story will unfold, not even the director or the actors.

One year later, Lou and Malik are back from their food truck journey to serve guests at a horror-themed wedding organized by Ophélie, who has become a wedding planner. It's Halloween night, and the Twitch community will have to help them create the best horror comedy possible by deciding live on the rest of the script from among hundreds of storylines proposed by writers Camille Duvelleroy, Claire de Saint-Pierre, and Franck Yaya.