The death of Dr. Gero at the hands of Androids 17 and 18 prompts the activation of Androids 13, 14, and 15. They try to kill Goku, who fights them with the help of Trunks, Piccolo, Vegeta, Krillin, and Gohan.

The death of Dr. Gero at the hands of Androids 17 and 18 prompts the activation of Androids 13, 14, and 15. They try to kill Goku, who fights them with the help of Trunks, Piccolo, Vegeta, Krillin, and Gohan.

Goku and Krillin want to be trained in the martial arts by the great Master Roshi. The only way he will agree to train them is if they go to Devil's Castle to find the Sleeping Princess, who is being held prisoner by Count Lucifer, and bring her back to his island.