President of Qingyun Group, Xiao Qingyun, lies gravely ill in bed, entrusting her empire to her husband Shen Mingyu, who she has loved for eight years. But an unexpected twist reveals Shen Mingyu's hidden agenda—drugging her secretly and betraying her with her former secretary Chu Qing. Determined to fight back, Xiao Qingyun finds herself imprisoned in her own home by Shen Mingyu. Desperate and isolated, she reaches out to her best friend Gu Yaoyao for a mobile SIM card to establish outside contact. Posing as gravely ill, she secretly gathers evidence against Shen Mingyu. As the mystery unfolds, Xiao Qingyun discovers that the "Shen Mingyu" living with her is actually her rival Lu Ziming in disguise. Meanwhile, the real "Lu Ziming" appearing in her life is none other than her true husband Shen Mingyu. In a joint effort, they uncover the truth and bring the fake "Shen Mingyu" to justice.