Johnny made a promise to his father, who was wounded fighting for the South. He promised to take care of the family and not run off to fight. Without Pa, Johnny\'s family can barely scrape by. But when there\'s an offer to take his mules and wagon on a bold mission to supply the Rebel troops, Johnny can\'t resist. Then he\'s captured by a Yankee--Cush, a runaway slave. Johnny doesn\'t like taking orders from a black. But he\'s got no choice. He\'s bound for prison camp, tormented by his broken promise and wondering what will become of his family and himself.