Following a night of particularly wild dissipation, Charles Meredyth decides to cure his son, Gallop, of his convivial habits, tells him that he has killed a taxi driver, and offers to help him escape. Gallop lands in a small southwestern town whose only inhabitants are its founder, Granville Truce; his daughter, Pauline; and a gang of Mexican bandits. Gallop discovers that Truce has developed a rust remover from cactus oil and markets the product. While routing the bandits, Gallop puts the town on the map and a ring on Pauline's finger.
—AFI