As soon as Shen Zhiyi opened her eyes, she was transported from the workplace to a "stand-in" in a strange world - just because she resembled Lu Chengze's Bai Yueguang. Faced with Lu Chengze's deliberate approach, "best friend" Lin Weiwei's secret instigation, and Su Manni's hostility and difficulties, she responded coldly and never acted like a fake who could be manipulated by others. What's even more ridiculous is that her best friend before time travel is actually here, but she's standing on the opposite side to help the villain plot against her. Shen Zhiyi wakes up to break up the situation, coldly criticizes the stand-in trap, and fights against the false friendship. But Lu Chengze, who seemed gentle, turned from "taking advantage" to out-of-control obsession when she rejected her again and again: "Shen Zhiyi, you should have been mine a long time ago."