In this edgy slasher about a brutal social media game of terror that gets out of control, teen horror is back. Wheaton University unravels the night a star athlete is murdered following a stabbing charge, setting off a series of social media-linked killings. When a masked killer targets students across campus, three sorority sisters race against time to uncover the truth behind the school's hidden secrets - and the horrifying meaning of an exclamation point - before they become the killer's next victim.