Sarah is on the run from a bad relationship when a lookalike stranger commits suicide right in front of her. Sarah sees a solution to all her problems by assuming the dead woman's identity and clearing out her bank account. Instead, she stumbles into a thriller mystery, and uncovers an earth-shattering secret: she is a clone. She learns there are more like her, genetically identical individuals, nurtured in wildly different circumstances, and someone is trying to kill them off, one by one.