She is just a sparrow, but she doesn't want to live in Cangze Valley all her life. She wants to become an immortal and find her mother who left her a hundred years ago. By chance, she finally met the immortal, but the immortal only wanted her to be his spiritual pet? And she fell in love with him unknowingly, but he already had a crush on her. She thought, it would be nice to just be his spiritual pet for the rest of her life with peace of mind and happiness. But why is there another turmoil in heaven? Can she find her mother? And are he and her destined to be together or not? What kind of hardships did she go through to transform from a little spiritual pet into a sparrow fairy that everyone respects?