Naoto Saki is a typical young boy. He gets average grades in school, and nothing about him really stands out. His favorite thing to do is sleep - which doesn't exactly endear him to his teachers when he doze...

After a nuclear war turns most of the Earth into desert wastelands, surviving humans had used the sands in order to survive. One of them is a professional mercenary named Sunabozu, who makes a living by hiri...