After the three years have passed, everybody goes to meet at the specific point given to them by Future Trunks. As it turns out, the island they were supposed to meet on contains a huge city.
The Z-fighters are surprised to find Bulma there holding a baby (Trunks) in her hands. Goku mistakenly calls him Trunks before Bulma gives him the name, but since Trunks has already been born, there is no danger in revealing who he is. Since the Z-fighters cannot sense the KI of an android since they aren't really human, they must look for the androids with their eyes and ears, and that may take a while. Eventually, Yamcha finds the androids, and is surprised to see what they look like, since no one ever got a description from Future Trunks. The androids quickly absorb Yamcha's energy through red orbs in their hands then promptly punch a gaping hole through Yamcha's stomach. The other Z-fighters eventually find Yamcha and fight a little with the androids, but soon give up, realizing that the fight is causing too many casualties. Yamcha is taking back to the original meeting place on the island (on a hill) and given senzu bean, which revives him.
The androids and the Z-fighters all go to an island. Surprising, Goku is winded just from flying. Something is noticably wrong with him. He begins to fight with android #19 and is kicking his ass, but seems to keeping getting in worse and worse shape. Eventually the android overpowers him, and begins to absorb his energy. Piccolo is about to rescue him, when Vegeta rams into android #19 with a flying kick. The Z-fighters realize that the reason Goku is in such bad shape is because his heart Virus is killing him. As it turns out, he has never taken his medicine, because the symptoms never came. Yamcha takes him back to his house, where he is given the medicine. However, it seems to have little effect on him yet. Meanwhile, back at the island, Vegeta has a few surprises of his own. Yet Unknown to the Z-fighters, Vegeta has aquired the ability to go Super Saiyan. He explains how ironic it was that his very anger at not being able to go Super Saiyan was the thing that caused him to go Super Saiyan. Vegeta and Android 19 fight around a bit, and it becomes clear that Vegeta has the upperhand. Eventually, Vegeta lets the android grab onto his arms, the Andriod begins to drain his energy saying "I'll will drain All your Energy Vegeta. I won't let Go!" Vegwta replies "THAT RIGHT ANDROID NEVER SAY DIE!" He places his feet on the android's chest and pulls its arms from their sockets. Vegwta then proceeds to destroy android 19. Android 20 is astonished that there can possibly be anybody this strong. THen Bulma Flies in and Android 20 finds the time to flee. Then by this Time Future Trunks has come back and tells that those weren't the androids from the Future. And Bulma informs that Android 20 is none other then the Evil Dr. Gero himself! As Dr. Gero flees into a giant mountain, using the cracks to conceal himself, since the Z-fighters cannot sense his Ki. Vegeta is given Senzu and follows the android. The rest of the Z-fighters follow Vegeta. Android 20 is contemplating what to do. He decides to pick off the Z-fighters and steal their energy, then move on to Vegeta. He tries to steal Piccolo's energy, but since Piccolo has a supreme auditory system, he knows the attack was coming. Unbeknowst the android, Piccolo was actually destroying his energy while he thought he was abosorbing it. Piccolo then takes a senzu and challenges 20 to a bout. 20 agrees, assuming he should be at least as strong as Piccolo after absorbing his energy. He gets the crap kicked out of him. He flees into the cracks of the mountain again and is going back to the Secret lab.
Once Dr. Gero returns to the lab and attempts to persuade #17 and #18 to fight the Z teamers. The androids disagree, and don't like being commanded, and say so. The two androids decide to activate #16 despite many warnings from Dr. Gero. #17 then kills their creator without a thought. Trunks shoots a blast into the cave which the lab is in, but it has no effect. #16 is activated.
The androids fly away, and the Z teamers realize they are heading towards Goku's house. Vegeta is mad the androids paid him no notice, and insists on following them despite numerous warnings from Trunks. Meanwhile the androids decide to touch down for a while. In a debate about taking a car, #17 asks #16 if he talks. Android 16 then states that he was built to destroy Goku. The androids puzzle over this for a little while, then Vegeta confronts them. #18 tells #16 to fight Vegeta, but he refuses. #18 and Vegeta begin to duel, and 17 is surprised that the Saiyan is much stronger than Dr. Gero told them he was. All of the Z teamers return, and Vegeta comments on how stupid they are. #16 refuses to fight again. Trunks tells Vegita to run, and the androids say they won't fight people who run away because they have no interest in them. Vegeta asks Trunks if he could use another slap. #17 complements Vegeta's fighting skills, but Vegeta just insults him in return. Piccolo notices that the android has infinite stamina, and Vegeta is getting weaker by the minute. #18 begins to land some critical hits on the now weakened Vegeta. Trunks cannot stand to see his father in such pain, and intervenes with his sword. However, #18 is so strong that Trunks' sword chips on impact. Piccolo and Tienshinhan engage #17, but are beat back easily. Krillin considers helping, but realizes he's no match for the androids. #17 and #18 make quick work of the Z warriors, but do not kill them off. The Androids after kicking the shit out of the Z-Warriors tell Krillin to give his fallen comrades Senzu Beans, because their only true purpose is to kill Goku. #18 kisses Krillin on the cheek, and departs.
When Piccolo was revived along with the rest, he became extremely frustrated at himself. Without a reason, he flies off. Krillin notes the direction that Piccolo left in, and speculates that he has gone to recombine with Kami. Since both have an unimaginable hatred for the other, Krillin realizes that the situation must be grave. Back at Goku's house, our hero is still in incredible pain from the heart virus Even after taking the medicine brought by Trunks. When Piccolo reaches Kamis Look-Out, he explains to Kami on how they need to fuse together to be a super warrior. However, Kami wants to have a longer look at the situation before he does anything rash, and tells Piccolo to wait.
Androids #16, #17, and #18 decided to take their time on their way to find Goku, and have some fun on their way. Both a motorcycle gang and the police chase after them, but are easily dispatched. Krillin and Trunks inform Chi-Chi of the situation, and that they have to move Goku to a safer locale. Goku is loaded into a plane, and they all fly off to Master Roshis house. While the Z Team waited, Gohan, Krillin, and Trunks discuss how they could possibly use the time machine to defeat the androids. Trunks told them that going into the past again to destroy the androids before they were activated would create another timeline, and would not destroy the androids looking for Goku in their future. When asked why he came back if he knew that anything he did would have no affect on the androids in his future, Trunks explained that he wanted to see if the androids had any weaknesses when Goku fought them, and if worst came to worst, he could go back to his time and destroy the menace.
In mid-flight the plane receives a call from Bulma saying that another time machine had been found. She faxes over a picture, and Trunks recognizes it as his time machine. He decides that he has to get a closer look, so Gohan, Trunks, and Bulma all head to the reported location.