A sudden car accident swaps the lives of Shen Mingyue, the heiress of the Shen family, and Su Wan, an ordinary girl. Faced with completely unfamiliar circumstances, the two go from initial shock and struggle to choosing to trust each other and stand side by side. Together, they investigate the secrets surrounding their identities from twenty years ago, clear away layers of mystery, and ensure that those responsible for the wrongdoing back then receive the legal punishment they deserve, resolving hidden threats to their families and the city. In the end, they return to their respective lives, gaining not only bonds of family that transcend blood ties but also joining forces to forge new paths in business.