The son of a former adventure, turned husband and father who has taught him the values of loyalty and to shoot when he has too, leaves on a trip with an uncle, to visit the City of New Orleans, as a present for his sixteenth birthday, there Jack has an encounter with a braggart and trouble maker, the son of a wealthy man who has no compassion or respect for anyone. After the fatal encounter Jack is helped by a doctor who comes to his aid and takes him to his south Texas home, the doctor decides to teach him medicine along with another boy of the same age who is the son of the doctors ranch foreman. The boys form a strong friendship, five years pass and the boys study hard and plan to go east to finish their studies in a medical school During the past five years Jack must defined himself from unlawful bounty hunters sent by the unscrupulous father who has posted a bounty on the boy. Four outlaws who want the reward mistakenly kill the doctor, and the chase is on across South Texas and Mexico, with a surprise ending.