While searching for the owner of a missing mobile phone with his girlfriend, Marion (Pauline Etienne), Gaspard (Grégoire Leprince-Ringuet) falls for the mysterious Sam (Louise Bourgoin), who draws him into a dangerous virtual-reality video game, where she provokes unsuspecting victims into killing themselves. Directed by Gilles Marchand, this intense French drama alternates between real-life events and those within the simulated computer world.