Modern tasker Wan Wan time-travels into a book, becoming the cannon fodder vicious female supporting role destined to die young in the story. After completing her mission, on an impulse she passionately kisses her long-secretly-admired Shizun Zuo Ci, intending to gracefully pull away and return to reality. Unexpectedly, Zuo Ci is a high-level big shot who has traversed thousands of worlds, and directly blocks the return path to keep her. Wan Wan racks her brains and schemes in every possible way to escape, failing time and time again. Zuo Ci is obsessed and deeply affectionate, willing to defy the world's will at the cost of his black hair dyeing with frost, trading for a chance of return for her. Between staying and leaving, Wan Wan falls into a dilemma. A fake marriage unveils all the truth, a great dream sinks and floats, and finally the Immortal Lord crosses dimensions to find her awakening in reality.