this is a fan Dragon Ball manga set just before the events of The History of Trunks Anime this manga tells the story of fall of the Z warriors and the rise of The deadly Androids 17 and 18 bare witness as Gohan unlocks his Super Saiyan potential and sets out for revenge and witness the son of Vegeta grow up and learn to master is Saiyan power in order to survive this horrible world ruled by the Androids