John and Katherine Colby decide to put off parenthood until he has become wealthy. Their friends, Tom and Grace Donaldson, decide to start a family right away. While John works his way up to a position of power at a steel firm, Katherine begins to question the wisdom of their decision.

Geoffrey is desperately in love with Mavis, who lives at his boardinghouse and is also pursuing a writing career. Unable to marry her because of his poverty, in his anger he curses God for abandoning him. Soon Geoffrey meets Prince Lucio de Rimanez, a wealthy, urbane gentleman who informs Geoffrey that he has inherited a fortune, but that he must place himself in the Prince's hands in order to enjoy the fruits of his inheritance. What Geoffrey doesn't know is that Prince Lucio is actually Satan.