Cell then announces that he will hold a martial arts tournement to decide the fate of the earth. All of the fighters train really hard and then the day comes. Goku is the first to fight.
Having the powers of Piccolo as well, instead of laying eggs, Cell lays seven little Cell Juniors. All defeated by Gohan, Cell is later killed by Gohan, who turns Super Saiyan level 2 for the first time. With this power, Gohan gives Cell a real hard beatdown. Cell, in a desperate state, spits up Android number 18 and tries to self destruct. At this point, Gokou grabs Cell, and they teleport to King Kai's planet. Goku, King Kai, Bubbles, Gregory, and the planet are destroyed, but Cell lives on...
Now back on Earth, Cell learns the "Instant Transmission". He then becomes greatly powerful having felt the Saiyan blood flowing within him. Gohan feels Cell's ki and turns to see a cloud coming at them like a mini thunderstorm. A blast coming out of the cloud hits Trunks, killing him literally. Vegeta turns and stares at his son on the ground. Cell then explains how he was able to regenerate and how he is standing where he is. Gohan then feels it will be a pleasure to kill the being that killed his father and looks forward to Cell's death. Gohan, wanting to beat Cell, can't because before Gohan can do anything, Vegeta goes crazy on Cell. Cell easily swings Vegeta aside and Cell announces that he will now destroy the Earth. Gohan, is ready to give up, but Goko gives him a spirit lifting talk and the two go at it with KameHameHa's. The two blasts hit and Gohan, giving his all, defeats Cell.