Musical Chairs

A new girl joins the school, and the popular girls decide the want a new member in their group. The new girl invites them to a 'celebration' sleepover and they accept. The girls think they're going to some normal sleepover to just have a fun time, then the new girl asks them to do an 'urban ritual' she found online, now the girls are thrill-seekers and they agree to try it out. But they don't know what they are getting themselves into...