Son Goku Is The Greatest Hero On Earth. Five Years After Defeating The Demon King Piccolo, He's Grown Up And Had A Family--he's Married, And He Has A Child, Son Gohan. But What Is The Real Reason For Goku's Incredible Strength? A Visitor From Outer Space Arrives Bearing Terrible News--goku Is An Alien, And The Visitor, Raditz, Is Goku's Brother! When Raditz Turns Out To Be A Ruthless Killer, Goku Must Fight His Incredibly Strong Brother To Save His Family And The Entire Human Race. A Surprising Alliance May Be Earth's Last Hope: Goku Will Team Up With His Old Enemy Piccolo...archenemies United To Save The World! -- Viz Media