Sanya Rawat, a psychology student, finds her mundane life savagely disrupted when two strangers - an unpredictable old English woman and a beastly man from Bolivia - contact her on a social networking site. One among them is a macabre killer from Sanya's past life, driven by an eternal and insatiable thirst for her blood. Strange out-of-body experiences and hallucinations start to haunt Sanya, revealing clues to her past identity, even as she stumbles through a series of unusual incidents that follow an eerie pattern. To make sense of it all, Sanya must learn a terrifying truth about her past...