Goku's training under King Kai is finally complete, and he's eager to return to Earth. Master Roshi uses the Dragon Balls to summon Shenron, but will Goku make it back in time to stop the Saiyans?

Krillin's furious attack wipes out the Saibamen, but the Z-Fighters are powerless against the Saiyan warlords. One by one, Earth's defenders suffer devastating injuries - or fall in battle. Goku's return is their only hope for survival.