In 710 AD, Shangguan Wan'er was beheaded by Li Longji during the Tang Long coup. Before she died, she saw a familiar figure - the dying Wu Zetian sitting on the Nine Layers Palace, her eyes like ice.
When her consciousness dissipated, she was suddenly dragged into the vortex of time. When she opened her eyes again, she was already the young girl Shangguan Wan'er: fourteen years old, she was kneeling in the Yeting Bureau. She was taken into the palace as a maid because her grandfather Shangguan Yi was convicted, and outside the window, there was snow falling in the sixth year of Yonghui.