The adventures of Earth's martial arts defender, Son Goku, continue with a new family and the revelation of his alien origins. An the Saga continues, probably the best and most intense of them all...
Dragon Ball Z starts 5 years after the end of the Dragon Ball anime with Goku as a young adult. A humanoid named Raditz then arrives on Earth and tells him that he is Goku's long-lost big brother and they are members of a nearly extinct extraterrestrial race called the Saiyans.