In 2004, four undocumented Mexican teenagers arrived at the national underwater robotics championship at the University of California, Santa Barbara. No one had ever told Oscar, Cristian, Luis, or Lorenzo that they would amount to much--until two inspiring high school science teachers convinced the boys to enter the competition. Up against some of the best collegiate engineers in the country, this team of underdogs from Phoenix, Arizona, scraped together spare parts and a few small donations to astound not only the competition's judges but themselves, too.