To repay the debt of saving her life, Song Tinglian, a white peacock demon, protects the disabled He Xuanwen for three whole years, using her spiritual power to heal his legs, yet repeatedly faces misunderstandings and cold treatment. Having repaid her debt of gratitude, she turns and walks away. Only then does he finally come to his senses, but it is already too late. With her heart set on all living beings, she sets out to fulfill a greater cause, while he spends the rest of his life consumed by regret and dies alone.