Growing up in a thief’s den, Ah Dai remained innocent and kind. During one of his thieving runs, he was caught by a powerful alchemist, Ge Li Si, who took him along for his own reasons. Ah Dai’s life was forever changed. Fate lead him to save the number one assassin from the Continent. In order to bring about his revenge, the King of Assassins forcefully brought Ah Dai to a secluded town, and passed on his life’s learnings to him. Following an assassin, will Ah Dai become a demon?