When the moon is full, the evil spirit is at its strongest. She is the little princess of the Yin Kingdom. She was born on a full moon and was ostracized by the people in the palace since she was a child because of her demonic aura and strong demonic power. He is the legitimate son of the Kingdom of Ji and a demon exterminator. His mission is to eliminate demons and catch demons. They were supposed to be opposites, but they met in an accident and fell in love with each other. Unfortunately, their love was forced to break up because of their opposites. He shot him off his horse under the spell of his father. She was in pain, she was sad, she hated him, and entered the six realms of reincarnation with hatred. However, she could not be reincarnated as a human because of the excessive demonic energy in her body, so she and he began to love and kill each other for generations, entangled in love and hate...