Five years have passed since the fight with Piccolo Jr. and Goku now has a son, Gohan. The peace is interrupted when an alien named Raditz arrives on Earth in a spacecraft and tracks down Goku, revealing to him that that they are members of a near-extinct warrior race called the Saiyans.

Gohan has been kidnapped! To make matters worse, the evil Garlic Jr. is gathering the Dragonballs to wish for immortality. Only then will Garlic Jr. be able to take over the Earth in order to gain revenge for the death of his father. Goku rushes to save Gohan, but arrives at the fortress just as Garlic Jr. summons the Eternal Dragon! Krillin and Piccolo try to help Goku, but their combined powers.