She is a woman alone in the world, struggling to keep the dilapidated Hundred Herbs Hall afloat. She would rather remain unmarried than give up her identity as a female physician, even if people look down on her. It is a fox that once lived happily in the mountains, spending its days running through the woods. When hungry, it would catch rabbits and pheasants; when full, it would tease them for fun. An eagle brings them together. From then on, the fox follows her, watching every joy and sorrow in her life and the sadness that never leaves her brow. At last, she dies, killed by the constraints of society, by sorrow and depression, and by the judgment of others. The fox decides to live in her place, to see the world through her eyes, feel what she felt, and learn what it means to experience joy, anger, sorrow, and happiness, and what human affection is. So, as she lies dying, it enters her body. From then on, it becomes her. It begins to learn anger, sorrow, and compassion, and also what love is and what it means to bear a mission.