Luc doesn't like to fight. He wins his matches anyway. Men always turn out to see the Boy Giant box—he's taller and stronger than anyone else at the Woodrat Club. Luc takes part to help Mr. Chilton, the man who brought him to New York.

When a fast-talking stranger brings a kangaroo to the club, the Woodrat gains another attraction. The kangaroo boxing makes Luc queasy. But Mr. Chilton befriends the kangaroo owner. Soon Luc is torn between loyalty and his conscience. And if he makes a move, the kangaroo's mysterious trainer is ready to cut him down to size.