John Ellison, a disillusioned suburban ER doctor, finds his existence transformed when he intervenes in a drive-by shooting, saving a young boy’s life and killing one of his attackers. When he learns the boy is still marked for death, he finds himself compelled to save him at any cost and discovers that his life and his outlook on medicine may never be the same. When he stops to help the victim of a drive-by shooting, emotionally troubled doctor John Ellison finds himself embroiled in gang warfare. Every doctor has a responsibility to help. But what happens when “first, do no harm” puts his own life on the line?