The plot follows Princess Turandot who is cursed by a mysterious power emanating from three Mazovian bracelets that were given to her as birthday gifts. These bracelets’ life-draining effects cause the princess to becomes cruel, and gradually she loses her humanity.

Sun Wukong broke the alchemy furnace of Tai Shang Laojun, and the fragments fell into the country of Guizi, forming a mountain of Flames. Not only did it bring a never-quenchable wildfire, but also inadvertently opened the demon seal, and the demon king "heart demon" took advantage of the chaos to blend into the world. Princess Meiyue is a demon-slayer. In order to get rid of Princess Meiyue, the demon designed to force her third-generation personality , make her insane, and blame her for killing the king. Princess Meiyue defeated the demon with the help of her first partner Yuan Buxie.