The oldest kingdom on the continent of Asgar has decayed to the brink of destruction. Lu Ming broke away from the empire's killer group and wanted to spend his life incognito. However, the appearance of a girl named Senna made him once again involved in the struggle between the rebel Dark Blade organization and the kingdom. The Dark Blade, they attempt to completely bury this rotten country and bring new light to the people. Everyone among them has their own unbearable past. Lu Ming and these people who carry the heavy past fight side by side to protect the future of others, dragging the darkness of the past into the endless abyss.