After years of anguish from a defeat , Dr. Gero is plotting revenge against the character who destroyed his personal android army, the Red Ribbon ,and ruined him- Gokou. Dr. Gero begins a project, but the development was taking too long, so he abandoned it and left the computer running the program that was a mistake...
Everyone is training to get ready for the Androids that Trunks warned them about. Gohan, Gokou, and Piccolo train in the mountains. Vegeta trains himself relentlessly under to 450 times the gravity of Earth in the gravity sector of Capsule 3, attempting to become exteremely powerful as Gokou did when he trained under heavy gravity. Yamcha, Krillin, Tein, and Chauzu also undergo hard training to prepare for the future Three years go by.
Gokou, Gohan, and Piccolo fly to the southern island 90 km away from where Trunks appeared to rendevous with the other Z fighters. They encounter Krillin on the way, and everyone lands to meet with Yamcha and Tein (Chauzu was left behind because he wasn't too strong to be of any use in fighing.) Bulma is also there holding a baby, who is revealed to be Trunks. Bulma tells that she is there to see how the Androids look like. Everyone except Gokou and Piccolo becomes startled that the baby is Vegeta's kid. Yajirobe flies on a hovercraft in to give the warrioris a bag of senzu beans from Korin. Everyone looks at the city under the cliff in which they stand on, but they see no signs of the Androids.
Yajirobe is leaving and his ship mysteriously explodes. The Z Warriors separate to investigate while Gohan brings Yajirobe to safety. Two mysterious figurs, Androids 19 and 20 jump around the city brutally killing the people they pass by. Yamcha unknowingly encounters the strange figures in his search for the androids. Android 20 grabs Yamcha by the mouth, stealing energy in the myst, and jabs a hand through him. The others sense Yamcha's troubling ki and arrive to the scene. Krillin takes Yamcha's body back to Bulma for senzu beans. Gokou, Tein, Piccolo, and the Androids fly off to more deserted areas for better fighting grounds.
The Androids request to stop at Stone Mountain. Piccolo sees it as the androids' advantage for fighting because they can hide in the mountain mazes if they lose the battle. Gokou and Android 19 battle first. Gokou has the advantage, but doesn't do well even in Super Saiyan level.
Yamcha is revived with a senzu. He tells that the androids have the ability to absorb energy. Gohan, Klilyn, and Yamcha then go to warn their comrades of this factor. Android 19 absorbs part of Gokou's energy by Gokou's kamehameha before he is warned of the androids' ability. Gokou suddenly suffers from his heart failure and collapses. Android 19 beats Gokou around and then begins to absorb the remains of Gokou. Vegeta leaps in to save Gokou, telling that it will be he who will be the one to defeat Kakarott. To everyone's surprise, Vegeta powers up into Super Saiyan mode too. He tells how during training, he relaized that he training methods were not going to be good enough to defeat Gokou, so he got angry and turned into a Super Saiyan. Yamcha goes and takes Gokou back to Master Roshi's place to recover. Vegeta beats Android 19 and purposely lets him steal some of his energy. Then, he kills the android off. Android 20 watches and realizes how he miscalculated the power levels of the Z Warriors. Thinking that he will lose to Vegeta, Android 20 runs away. Vegeta demands a senzu to restore his energy and then pursuits after his target. Everyone joins in the hunt.
Trunks returns from the future and looks for the Z Warriors. Seeing the decapitated head of Android 19, he realizes that the Z Warriors were fighting the wrong androids, and the androids that were a potential threat were 17 and 18.
Android 20 sees that he's been surrounded and makes a move to absorb Piccolo's energy. Gohan comes and saves him, and Piccolo is restored back to full energy with a senzu bean. Android 20 is surrouned again and is about to be killed. Trunks also arrives to the scene, telling that Androids 19 and 20 are not the ones that will terrorize the future. Bulma flies in with baby Trunks and Yajirobe. Dr. Gero shatters the ship with a fireball to create a diversion for escape.
Trunks rescues his mother and his baby self. Bulma tells the identity of the android she saw. Android 20 is really Dr. Gero, who created Android 19 to which he used in turn to make himself into an android. Trunks tells that Androids 19 and 20 are the wrong set of androids to fight. Androids 17 and 18 are the real targets, but are not yet awaken. Gohan carries Bulma, baby Trunks, and Yajirobe to fly back home. Everyone else flies off to destroy Dr. Gero's lab before Androids 17 and 18 can be unleashed. Dr. Gero realizes this plan and also races towards his lab.
Dr. Gero, knowing the hidden location of his lab, gets to it faster than the Z Warriors. The Z Warriors catch up, but by the time they reach the lab Androids 17 and 18 have already been released. Everyone watches the androids. Androids 17 and 18 make a mess of their creator's laboratory and then Android 17 slices Dr. Gero's head off before crushing it. Androids 17 and 18 also head to the pod of another android and release him, Android 16. Finally, they head to face the Z Warriors. In a remote area, Androids 17 and 18 easily beat Tenshinhan, Piccolo, Trunks, and Vegeta. Android 16 refuses to fight, telling that he was created to destroy Gokou only. Klilyn, too scared to fight, watches the horror. The androids head to Klilyn and tell him that the Z Warriors are not dead yet. They confess that everything is a game, and that they'll be glad to fight their enemies again once they get stronger. later... The Z Warriors suspect the Androids of coming to Gokou's house to kill him and move Gokou to the Kame House. (*3)On the journey, Bulma contacts the crew and tells our the discovery of an abandoned time machine much like Trunks', but Trunks has his machine a capsule with him. He tells that Bulma only made one capsule in the future, and Trunks and Gohan fly in to investigate. Nearly, the shell of a creature hatched not too long ago is discovered. In a closeby town, the mysterious creature is absorbing everyone.
Piccolo sees that the only he could defeat the Androids would be to power up dramatically, and decides to fuse back with Kami. Kami, gaurdian of the earth, watches an enemy unlike any other attack Gingertown. Victims are completely consumed, and no one is spared. Kami tells Piccolo that the earch does not need a god now, but a super powered being. The two fuse with Piccolo as the base, and the two become one again, as Kamicolo
Kamicolo flies to the town with the strange evil being who is absorbing everyone. (All the inhabitants of the town have vanished and only empty clothing remain.) The being hatched from the time machine shows itself. The two fight. Cell holds Kamiccolo prisoner and absorbs an arm. Piccolo breaks free and demands to know more about his opponent before he loses his life to it. Cell yields to what he believes to be Kamiccolo's final wish before he absorbs him. It introduces itself as Cell, another one of Dr. Gero's creations. When Trunks returned to the future and killed Androids 17 and 18 of that time, Cell killed Trunks and stole his time machine to return to the past where the Androids were still alive. Cell reveals about how Dr. Gero abandoned the project on him but left the computer on to develop him on its own. In order to reach perfect form, he needed the beings of two figures crucial to the powerup- Androids 17 and 18. As newly hatched, he needed energy. That is why he has been absorbing people. Piccolo laughs and tells that he won't let Cell reach perfect form. Then, he tears off his useless limb and regenerates his arm. The two fight again, but Cell escapes the town to enter other parts of the city, where he contiues to kill for energy. Piccolo and his comrades hunt for Cell before it is too late...
The Androids are heading for Gokou's house via car and trashing any unlucky cities they pass by.When they finally reach Gokou's house, they find it abandoned and then slowly travel to Kame's House, thinking the whole process of "hunt and kill Goku"a game.
Gokou recovers from his condition and, hearing everything while asleep, prepares to join in fighitng. He teleports for Gohan and then to Vegeta and Trunks' location, telling of a place where they can train for one year in one day. Everyone goes to Sky Palace and enter the Room of Spirit and Time, where time passes by slower. Only two people can train at a time in the room. Vegeta and Trunks enter first.
After devouring many civilians, Cell grows strong enough to face the Androids and head for them. The Androids reached the Kame House. The Non-Saiyan Z Warriors are there and Piccolo stalls. Piccolo and the Androids fly to a nearly island and battles Android 17 while the remaining Androids watch. As the two fight, Cell reaches them. Cell easily beats Piccolo and heads for Android 17. Android 17 knows nothing about Cell and att*3`
