Su Wan is reborn back to her engagement banquet, tears up her engagement with the heartless Gu Yuan, and remarrys Gu Feng, the seemingly sickly and disabled eldest son of the Gu family. Using her memories from her past life, Su Wan lays out her plans step by step, helping Gu Feng detoxify and heal while investigating the wrongful case of the Su family. Gu Feng is actually also reborn with memories of his past life, secretly gathering strength as the two move from mutual testing to fighting side by side. They expose conspiracies, collect evidence of crimes, and go through dangerous situations. Gu Feng sheds his sickly disguise and finally brings a group of villains to justice, and the wrongful case of the Su family is vindicated. Having gone through hardships in two lifetimes, the two unravel all misunderstandings.