Shen Weilan, a modern female psychologist, transmigrated overnight into the eldest legitimate daughter of the Marquis of Yongning's mansion. The first thing she saw upon waking was the piece of white silk handed over by her stepmother. Using her micro-expression mind-reading skills, she saw through her stepmother's false mask, exposed her younger brother's provocation, and steadied her father's suspicion. From an abandoned child sentenced to death to secretly contacting the shops, escort agencies, and pawnshops left behind by her mother, she step by step uncovers the truth behind her mother's death. White silk, a silver hairpin, an old sewing box—every step in the mansion is a trap. This time, she will no longer be at the mercy of others; she wants to seek justice for her deceased mother and turn the sky of this mansion upside down.