Zhang Dajian traveled back in time to the troubled times of ancient times. His family was destitute and his sworn brother died, leaving only his sister-in-law Lin Wanru. In order to prevent her sisters from being sold to brothels, Lin Wanru took her two sisters to Zhang Dajian's home. In order to keep his family fed and satisfied, Zhang Dajian worked hard using a powerful system, and his family lived a good life.