Three days had passed since Desmond and Aisha entered the deepest level of the mines. The vast underground world was shown to be full of wonders and dangers, which the duo experienced during those three days.
After destroying that disgusting flying beast the first day, Desmond and Aisha spent some time flying over Zero. With Zero's speed and mobility, the duo managed to cover a considerable distance in a couple of hours. But the underworld proved to be more extensive than expected; according to the map, Desmond's target area was still far off.
Although traveling on top of Zero would have significantly helped shorten the distance, traveling on ground level could have been a better idea. Desmond and Aisha shared a chill that crept uncomfortably down their spines as they saw the subterranean sky full of beasts.