Ling Yangyang, missing for twenty years, returns to the wealthy family, only to find mysterious secrets hidden at home. As the heir of the Tianji Sect, relying on ancestral physiognomy and talisman-drawing techniques, she successively cracks bizarre incidents such as a bridge collapse and relatives becoming possessed. Facing the traps set by the fake daughter Ling Chuer, she calmly dismantles them, protects her family, and enters into a contract flash marriage with the fate-hardened Fu Yanchen from the Fu family to leverage each other's strengths. As the investigation deepens, a conspiracy that has lingered for many years surfaces. On the night of the full moon, at the Linghuadu Hotel, she will have a head-on showdown with the mastermind.