Eons ago, the devil arrived, and all races invaded. The heavens were on the verge of destruction, and the human race was in deep crisis of extinction. The Great Lord of the human race controls the destiny of the people, single-handedly suppresses all races, has arbitrary power for eternity, and overwhelms the endless army of demons. But when the troubled times came to an end, the great master disappeared. There are only endless legends in the world, which will be enshrined and remembered by future generations. Years go by, changes occur, and thousands of years pass by in a blink of an eye.
When the dusty darkness revives again, the alien race is ready to take action, the remnants of the demons return, and the human race is once again in dire straits...
