Ning Fenghua time-travels to become a cowardly illegitimate daughter of the Duke's Mansion, forced to marry Prince An whose days are numbered, single-mindedly waiting to inherit his estate. Who would have thought that the prince, who was supposed to lose his life, grows increasingly healthy and even pursues his wife with great fanfare. Inside the residence, sisters continuously frame and plot against her, yet Prince An protects her in everything he does, backing her up whenever the princess consort stirs up trouble. Ning Fenghua, who originally hoped for the prince's early demise, slowly realizes that with him accompanying her, life turns out to be exceptionally comfortable.