Inspired by true events, this psychological thriller follows Christelle "Chris" Blandin, a rock music-obsessed Parisian, who, after witnessing the harrowing November 13, 2015 terrorist attacks, quickly latches onto a community of survivors. Claiming that her best friend Vincent was one of dozens critically injured at the Bataclan Theatre, Chris becomes an indispensable resource for the group, working her way into a prominent role in a survivors' association. Though her commitment seems relentless, discrepancies begin to pepper her story – raising serious doubts among the true victims of the tragedy.