In the far reaches of the Milky Way, on the Planet Zi, there exists metallic life forms that posses superior fighting skills. These are the Zoids. Warriors by nature, Zoids have been used as the ultimate weapons in an ongoing war between the Imperial forces, and the Republicans of Planet Zi. A young boy named Van, born and raised on Zi, holds a strong fascination with Zoids. He develops a special friendship with a Zoid called Zeke, who is able to fuse with another Zoid, thereby enhancing its fighting ability. He also meets a girl called Fiona with whom he starts a journey of discovery to find out about her mysterious past.