A young Japanese samurai is drafted into the service of the Emperor just before World War II. He is trained in the Intelligence Service and assigned to Mexico. While in Mexico, Pearl Harbor takes place. He is ordered back to Japan but the submarine that is supposed to pick him up is sunk off the coast of Baja California and Chon is left stranded in Mexico. Rather than commit hari-kari as he was ordered, he decided to stay in Mexico. Eventually, he and a Mexican companion make their way to South Texas where they found work in a Tejano ranch in Webb County. He eventually marries the ranch owner's daughter and they have six children. He becomes a model resident in his community but eventually is found out and is charged in Federal Court as a spy. President Kennedy grants him a pardon before he was tried.