Lin Wan, a concubine, relies on her lost Suzhou embroidery skills to make a living in the deep house. What she embroiders is not flowers and birds, but human hearts and political strategies. When a double-sided heterochromatic embroidered screen alarmed the court, the thread of her fate began to be rewoven. From the cold-eyed side courtyard to the turbulent palace, every stitch is hidden with calculations, and every thread is connected to life and death. Lin Wan knew that in this cannibalistic place, the docile lamb would be chewed until no bones were left.