In Age 76X, Goku was killed by the Heart Virus. Around six months after Goku's death, two demons, Android #17 and #18, appeared on the southern island, inflicting massacres and immense destruction. Z Fighters were taken down one by one in the battles against them.
However, despite the desperate situation he found himself in, Gohan fought on alone against the demons. At this very moment, the construction of the time machine finally reached completion. Trunks' battle is going to change the destiny of the world!