Robby, young brother of the hanged bandit Claudius Smith, is sent off to college in New Jersey, but he never arrives.

At the scene of a destructive arson fire, Hannah Van Deusen finds a coin that is exactly like the one Robby used when she promised to wait for him. She determines to find out the truth about the incriminating coin, the threats to Domine Frelinghuysen and the mysterious fire. She doesn't know that her efforts will put her own life in serious danger.

Through the testing of these young people, the faith of both is strengthened. They discover that the Hog Money coin will be a part of their future.