After her grandmother is murdered, Shen Zhiwei, a young woman from a fishing village, takes possession of half a tiger tally and heads to the capital with her younger sister. Relying on a marriage contract, she enters the Marquis of Zhenbei's residence, determined to clear her father's name. Gu Linzhi, the Marquis of Zhenbei, gradually falls in love with her after initially testing her. Together, they investigate an old case and repeatedly face deadly attacks and obstruction from an aunt and her nephew, the Duke of Jin, and other forces. After gathering both halves of the tiger tally, they confront their accusers in court and finally clear the injustice. With the wrongful case overturned and their grievances redressed, Shen Zhiwei rejects the marriage contract and returns to her fishing village. Gu Linzhi willingly resigns from his official post to accompany her.