Nan Sangning, the matriarch of a millennia-old aristocratic family, time-travels to become the true daughter of a wealthy family lost in the countryside. Upon returning to the cold and biased Nan family, she faces indifference from her parents, scheming from the fake daughter, and humiliation from her profligate younger brother. Armed with the composure and statecraft of a top-tier family, she stands unyielding, step by step, publicly establishing rules, tearing down malicious siblings, and rebuking snobbish servants. He Siyu, an aristocrat from the He family, falls in love at first sight with the cool and formidable woman, gradually succumbing to her completely. Leveraging the influence of the He family, Nan Sangning dismantles her family's schemes one by one, sets traps to retaliate against greedy relatives, relies on her own strength to slap all villains in the face, secures her status as the legitimate daughter, fiercely settles accounts with family parasites, and embarks on her comeback path to rule the Nan family and stun elite Beijing circles.