Clarissa is a fairly normal teenage girl. She loves her music, her fun and most of all, her phone. When her so called 'friends' betray her, she finds an app that can help heal her anxiety and pain. However, her gain must come at the cost of other's pain. In this smartphone thriller there are no heroes - just a terrible lurking hunger satisfied only when its hapless victims foolishly reply to its summons. Who says an App can't kill?