Goku's Assassin

To the surprise of the Z Fighters, Android 17 finishes off Dr. Gero once and for all and Android 18 prepares to activate another android. Even Trunks, destroying the entire lab, does not stop her from releasing Android 16. 17 and 18 learn Gero's mission is to destroy Goku and decide to do just that, flying away from the Z Fighters without bothering to fight. Angered over being ignored, Vegeta chases after the three Androids and doesn't let anyone stop him, including Trunks. While the others follow, Vegeta catches up with the Androids and challenges them to battle. 18 accepts the challenge and the battle is about to begin.