Just after her ex-boyfriend Lin Haoyu, whom she had loved for many years, broke up with her, Su Wan signed a three-year hidden marriage agreement with Lu Chengze, whom she had only met three times and had Bai Yueguang Su Nian in her heart, for the benefit of the family. The two agreed not to interfere with each other, but in the process of playing husband and wife, they were surrounded by doubts about past scars and substitutes. It was unclear where this marriage, which started from a transaction, would go.