When carefree teenager Jay sleeps along with her older boyfriend for the primary time, she learns that she is the newest recipient of a deadly curse that's handed from sufferer to sufferer through sexual activity. Loss of life, Jay learns, will creep inexorably towards her as both a pal or a stranger. Jay's buddies do not imagine her seemingly paranoid ravings, till they too start to see the phantom assassins and band collectively to assist her defend herself.