Heir Chen Zhuo goes undercover as a security guard at Xu Meiying's company to uncover the truth behind his mother's death, only to unexpectedly become her live-in son-in-law. Meanwhile, his ambitious twin brother, Chen Yue, impersonates him to secure the family inheritance. Under mounting family pressure, Chen Zhuo reveals Chen Yue's deceit, reclaiming his life and embracing a new beginning.

陈家继承人陈卓为了寻找母亲死亡真相，潜伏在许美盈公司当保安，误打误撞当上赘婿。陈卓的双胞胎哥哥陈越一心想当陈家继承人，冒充陈卓的身份留在许美盈身边。陈卓顶着家族的压力揭穿了陈越的真面目，回归正轨，携手余生。