Due to family difficulties, the heroine Jiang Wan signed an agreement with the sinister CEO Lu Jingchuan and entered a wealthy family as a "substitute". On the surface, she appears to be a docile and decent wife and mother, but in reality, she is arrogant and observant on the inside. In the complicated environment of a wealthy family, she encountered all kinds of difficulties from hypocritical family members and vicious female supporting characters. However, with her unique wisdom, kindness and hidden arrogant nature, she not only skillfully resolved the crisis, but also unexpectedly won the appreciation and love of the Lu family and even the bosses from all walks of life, and gradually became the "group favorite" that everyone was vying to love.
The male protagonist Lu Jingchuan initially used and scrutinized Jiang Wan, but as they got along, he was attracted by her true temperament and extraordinary abilities that she inadvertently revealed. He gradually discovered that this "stand-in" was far more charming than he imagined, and was even the only one he longed for deep in his heart. When the secret of the stand-in's identity is about to be exposed, or the heroine is about to leave, the sinister CEO no longer pretends to be indifferent, asserts his sovereignty domineeringly, and uses all means to keep her by his side. He is completely reduced from a "user" to a "loyal dog", willing to surrender to her, and starts a bottomless mode of doting on his wife. In the end, the heroine gets rid of the label of stand-in, and becomes independent and deeply loved. She joins hands with the hero to face challenges together and gain a happy life.
