Rumbling, more than a dozen armed helicopters tore through the blue sky, flying in from the horizon. Bathed in sunlight, their fuselages gleamed with a sharp metallic sheen, and the shadows they cast on the ground stretched quickly, as if foretelling an impending storm.
Pilot Reynard arrived at the designated coordinates above, but he did not see the floating Armored Research Institute. He glanced downward.
An obvious look of astonishment appeared on his face.
In this coordinate range, the ground was bare, with a noticeable depression.
In the center was a spiraling stone mountain, devoid of any vegetation, with no sign of people in sight.
He scanned the scene again and circled the stone mountain, discovering the remnants of buildings hidden at the mountain's base on the back side.
Judging by the shape alone, it resembled a wine bottle, with an evident passage connecting to a circular hall.
Apart from that, nothing else appeared on this barren land.
What happened?
