After a train sparks a fire that destroys a family's crops, the man, his son, and his daughter rob another train of fifty thousand dollars. A baggage clerk is killed and the crusty representative of the railroad pressures Matt to solve it. 

Accused of being the masked robber of the general store, a homesteader agrees to come along quietly with Matt and Chester, but he asks that they help him complete a few chores about the place for his poor wife, who's in the family way.