Shen Xiaoman, a single urban white-collar worker living alone, has long harbored a secret crush on her boss, Song Yanzhe. But Song Yanzhe is drawn to Ke Jiayu, the owner of a coffee shop. Ke Jiayu, a woman who loves women, is in turn infatuated with Shen Xiaoman. In this perfectly closed love triangle, a series of bizarre and inexplicable events begins to unfold in Shen Xiaoman's life. In the end, Shen Xiaoman discovers that Song Yanzhe, Ke Jiayu, and herself are all the same person—and that she is actually a patient with dissociative identity disorder.