To the rest of the world, Garth and Hub are mysterious old men hiding millions. But to Walter, they are family - and now they're about to lead him on an adventure he'll never forget. It's the summer of 1960 and introverted 14 year old, Walter, is unceremoniously dumped by his single mother, Mae, at the Texan farm of eccentric great uncles, Hub and Garth. Walter has never met them before, but the legend has it, they were bank robbers, mafia hitmen...