Set in the village areas of Wayanad, Malappuram and Kannur, Kappela revolves around an ordinary, innocent girl who es to Kozhikode city from a high range area called Poovarmala.
Carter (Thomas Jane), a troubled veteran who gets a chance at redemption by protecting a 12 year-old girl from an assassin after she witnesses a murder. Holding a shotgun with a single shell, he engages in physical and psychological warfare in a desperate fight for the girl's life.