The Series starts off when He was a Kid. Capeta has always been left alone at home,while his dad works. Capeta grew up liking Cars/Race Cars,He always adored them,and sometime space out,due to his imaginations. One day,Capeta's father found a spare parts for a Go-Cart/Cart,and he asked the Manager of a Cart Track Manager,if he can have the parts.That's when his dad started cleaning up the parts and fixing it. Capea one day found out about the Cart,he went up in the Hill, with his Two friends. But the cart did not have an Engine,so his father told him that he had to wait. Once they got an Engine,they went to a CartTrack.
He met a kid named Minamoto,His Rival.
He kept on chasing his back to catch up with him,and challenge Minamoto.

(Hope this helps,Watch the anime,if you want to know more,I cannot spoil anything)