Five years ago, the Song family suffered a sudden disaster, and Song Qinghuan left Huo Sihan at her most desperate moment, giving birth to their daughter Huo Xiaoman alone. Five years later, she returns with the child, and a paternity test completely disrupts Huo Sihan's life. Spending seven days caring for the child alone, from not knowing how to care for children to taking his daughter's hand proactively for the first time, the cold and rigid CEO finally begins to learn how to become a father. However, as the old case of the Song family is reopened, the missing due diligence working papers, the risk conclusion that appeared ahead of time, Cao Haidong, and the capital flows related to the Bai family gradually surface, uncovering a conspiracy buried for five years.