The first part tells the story of Moses leading the Jews from Egypt to the Promised Land, his receipt of the tablets and the worship of the golden calf. The second part shows the efficacy of the commandments in modern life through a story set in San Francisco. Two brothers, rivals for the love of Mary, also come into conflict when John discovers Dan used shoddy materials to construct a cathedral.
As a parting shot, fired reporter Ann Mitchell prints a fake letter from unemployed "John Doe," who threatens suicide in protest of social ills. The paper is forced to rehire Ann and hires John Willoughby to impersonate "Doe." Ann and her bosses cynically milk the story for all it's worth, until the made-up "John Doe" philosophy starts a whole political movement.
Hollywood hopeful Peggy Pepper arrives at a major studio, from Georgia, to become a great dramatic star. Things don't go entirely according to plan.