"Screen legend Cantinflas stars as Justo Leal, a young legal student learning under the wise Professor Arvide (Angel Garasa). Justo begins working at a prestigious agency, but he does not like working for the rich clients he must help. After not receiving a raise from the agency, he decides to work for those who cannot help themselves. Justo defends a young boy who steals a television set, and a young mother who works at a scandalous club, among others. Justo uses the skills he learned from his professor, as well as his own creativity, to help save the day.