Lin Wanzhou is heartbroken to see her husband Shao Yi'an's childhood sweetheart, Shen Manni, move into the house and win the affection of her parents-in-law during the years she was away from home. In fact, Shen Manni looks harmless, gentle, and well-behaved, but harbors a vicious heart behind the scenes. Facing Shen Manni's repeated probings and provocations, Lin Wanzhou remains silent on the surface, giving her a taste of her own medicine. For the traps set by Shen Manni, Lin Wanzhou skillfully resolves them, and in front of all the relatives, exposes all of Shen Manni's lies.