Hidden on the edge of the universe, the planet Esalunya contains very rich and rare blue light energy underground. Human beings living on the planet have gained immortality because they have been nourished by underground energy for a long time.
Because of its remote location, the inhabitants of the planet have long lived a comfortable life without disputes with the world, but this does not mean that alien coveters with scarce survival resources will not discover the existence of Isalunya.
An unexpected meteorite impact exposed this treasure land rich in blue light energy to the sight of careerists. After thousands of years of peace, it was finally broken by the invaders.