Caught up in his own family crisis, Bo Yan finds himself in desperate need of a wife. Agreeing to help each other out, Bo Yan and Jia Nan sign a marriage contract. But how can a fake marriage solve their problems when it brings with it so many problems of its own? Su Jian An, an unknown novelist, falls into an unspeakable family industry inheritance crisis in order to continue her dream of writing novels. Reluctantly, she signs a "contract marriage" with Lu Bo Yan, a junior high school enemy who has become a bigwig in the investment industry. The two people with completely different temperaments and childhood misunderstandings start a "sweet cohabitation war" under the same roof. At the same time, Lu Bo Yan does everything possible to intervene in Su Jian An's novel writing, frequently trying to find inspiration for himself. The two people continue to collide during their cohabitation and creative journey, pass through numerous obstacles, finally paving the way to success in love and in their careers.