In a jungle, far far away from the city, lived a boy named Son Gokou who was found by Son Gohan. Son Gohan's death remained a mystery until Gokou met Bulma & co for the search for 7 mysterious Dragon Balls which could grant any wishes. Through that, Gokou learned about himself and discovered his abilities to fight and save the world under the teaching of Kame. Gokou also gradually learned about his true self but his tail still remains a mystery. Derek's World of Dragonball provides some media and info on the prologue of the Dragonball series.