Once upon a time, according to the legend, there were seven round balls called Dragon Balls scattered everywhere. Once these seven balls were gathered, the Eternal Dragon would appear and fulfill the wishes for anyone.
Son Goku lived in a remote mountain and was super skillful. By chance, he and the talented scientist Bulma went out the mountain and tried to gather the seven ball, during which, they met their friends Master Roshi, Oolong, Yamcha and Krillin. Hence the hilarious but romantic journey began!