荒廃した未来の地球で激突する2体の巨大戦闘ロボット

Planet Earth, year 2199, after the Third World War, during a nuclear apocalypse when the sun is hidden behind a thick radioactive cloud, there are two colossal robots that collide with all their futuristic weapons, they are seriously damaged but continue to fight, one is Gundam and the other is Mazinger Z.