The apocalyptic war ended with the defeat of the Nightmare Legion, and the world ushered in the dawn. But the failure of the war did not dampen the ambition of the remaining nightmare forces to rule the world. The peaceful life was once again broken, and the end of the world once again came to the world. At this moment, the protagonist resolutely gave up his stable life, picked up the world-destroying sword in his hand, and embarked on a journey to conquer the nightmare army.