After the lost of goku from the heart virus Vegeta, Krillin, Tien, Yamcha, Piccolo and Gohan were the last hope against the both androids 17 and 18, but that ended as a disaster after one by one die from 17 and 18 leaving you and Gohan the last fighters to defeat 17 and 18. Years go by and 17 and 18 are still on a rampage killing ever human on earth leaving no mercy to the humans. Your training with Gohan and got wet from the water Gohan pass you a towel to clean yourself

Gohan : Here