Teen horror is back with a vengeance in this edgy slasher about a cruel social media game that spins out of control. Whiton University unravels the night a star-athlete is murdered in the wake of a hidden assault allegation, kicking off a spree of social media-linked slayings. As a masked killer targets students across campus, a trio of sorority sisters race 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 victims.