Shelby Bloom cringes when her mom posts an embarrassing video of her online. Shelby hopes no one will see it, but quickly the clip goes viral at school. When it turns out mean girl Brooke sent the video to everyone, Shelby plots revenge and secretly records Brooke doing something equally humiliating. But Shelby can't bring herself to share the video. She gets a better idea-one that will have everyone confessing their greatest embarrassments, if it works.