After her husband dies in a police shooting, Sara Crane (Meredith Monroe) is terrorized by the man behind her husband's death. He kidnaps her daughter and tracks Sara's every move using her car's security system. She has nowhere to hide, as the madman is able to hack into her car, her cell phone, even traffic lights and cameras. When he instructs her to help him find a man in a witness protection program, Sara refuses. But when he offers her a fair trade-the witness for her daughter-she has to reconsider.