Hann Rin Tan Ro is the planet jumper. He has extraordinary powers because he can jump from planet to planet. He is able to do this because of his physical constitution, because the molecules in his body are extremely compressed. He works in the kitchen of a hamburger restaurant. And one day a nuclear bomb falls through the roof of his house, where he lives with his foster father. Hann can dispose of the bomb quickly because he is not the planet jumper for nothing. But subsequent events show that this atomic bomb was an announcement, an announcement of an invasion.