In the ancient Qin Dynasty, Qin Shihuang was obsessed with immortality. He sent a mysterious army, known as the "Tangled Army", to find the mystery of immortality. However, their whereabouts and secrets disappeared as time passed. In the present, this mysterious story is suddenly revived. Scupltor Nie Jiuluo is a descendant of the Tangled Army. She lives an ordinary life, but her identity makes it impossible for her to avoid entanglements with the past. At the same time, Yan Tuo, a wealthy young man, whose family is controlled by a woman named Lin Xirou, is looking for the truth. When Nie Jiuluo and Yan Tuo meet, their destinies start to interwine. They begin to explore the secrets of the Tangled Army and the truth behind Lin Xirou, revealing a world beyond their imagination, the secret of earth owls, mysterious powers, and immortality.