This story takes place in a world made up of floating islands of various sizes, where two types of races, "Caninu" and "Felineko" live. Malt, a caninu boy, lives peacefully with his younger sister Mei on their grandparents' farm in the remote village of Petit Mona. One day, their village is suddenly attacked by the Berman Empire, and is burnt to the ground overnight. "How could something like this happen..." Malt and his friends were confused, then a mysterious voice called out from the radio...!? A group of children caught in the flames of war ride the mysterious giant tank "Taranis"' and fight to save their families!