Future World
The future world of Dragonballz was a quiet, damaged place created by Android17 and Android18. All the Z fighters met there fate against the Androids except Gohan and Trunks. Gohan become Trunks trainer and they trained to fight the Androids. (Trunks best friend was gohan) Gohan ended up dead against the Androids and when Trunks found out about it, his anger pushed him to the level of Super Saiyan. Of course it wasnt enough. He went back into the past to warn Goku and the other about the Androids and the heart virus for Goku. Trunks became much much stronger in the past. W hen he came back from the past he fought the Androids. Trunks freed the future from the two evil monsters. Trunks does not have his friends to be with him but they will not be forgotten.