Yun Country was surrounded by water on all sides. It was an island nation with an area of more than 500,000 square kilometers.
Because it was an island country, there were many islands scattered around it.
One of the islands was surrounded by tall iron walls with drones hovering above it 24 hours a day.
Everything was not simple.
There were many speculations regarding this island from the outside world. People believed that it was a secret military base of the Yun Country and that some unspeakable experiment was being conducted inside.
The bright moon hung in the sky.
A loud roar suddenly resounded from within the mysterious island.
Immediately after, the ground shook, and many mountains on the island collapsed. The surrounding high walls swayed as if they were about to collapse in the next second.
One by one, fighter jets tore through the night sky and hovered above a tall mountain on the island.
