When an aspiring actress (Alia Shawkat) in a military role-playing facility falls in love with a soldier (Callum Turner) cast as an insurgent, their unsimulated emotions threaten to derail the performance. Welcome to Atropia: an invented nation just close enough to Los Angeles for Hollywood set builders to create the fake villages, but far enough away that the performers who live on-site are not exactly flourishing in their acting careers.