Ryan ingratiates himself into a group of teens who run an online web series debunking urban legends. His sister disappeared a few months earlier, and he has reason to believe they were somehow involved. He knows that one of them persuaded her to play a dangerous game called the ELEVATOR GAME, well known on social media. Ryan convinces the group to play the game to learn more about his sister's disappearance. He does, but things go horribly wrong, and a supernatural creature is unleashed to hunt them down one by one.