Early in the century, high-spirited Irishman, Jasper Horn, drives a horse-drawn New York streetcar. But the electric era is beginning, so what's wrong with celebrating by having a drink while he's driving the tram? If it's only beer? Jasper and his wife, the teetotal daughter of a preacher, have a baby boy. His employer's beautiful wife finds herself attracted to the smartly-dressed son of Erin. A decade passes. The boss learns of the paternity of his son and fires Jasper. He leaves his wife and goes to Atlantic City where he finds success as a fez-wearing boardwalk fortune teller, the Great Jasper. Fifteen years pass. One of Jasper's sons has inherited his father's wicked ways...