The series tells the story of Ethan Vance, who, after a freak accident, finds his soul transferred into the body of a simpleton son-in-law. Upon waking, he catches his wife, Sophia Vance, in a compromising situation with Damien Thorne, who not only verbally taunts Ethan but also humiliates him. Damien's cousin, Julian Thorne, controls the Thorne Group and is pushing forward with a mysterious plan. In this unfamiliar and complex environment, Ethan decides to use his past intelligence to investigate the accident and the Thorne brothers' schemes. He discovers that many clues are intertwined, revealing a vast network of interests. While protecting his wife and confronting the Thorne brothers, Ethan uncovers an incredible secret and transforms from a simpleton son-in-law into a powerful figure.