Yun Zhi had a crush on her senior Su Jingyan for three years, but never dared to get close to her because of her low self-esteem; after an accident, her shadow broke away from her body and became "Shadow Weaving" with independent consciousness; Ying Zhi offered to approach Su Jingyan for Yun Zhi and interacted with her senior in her image; Yun Zhi struggled with gratitude and jealousy, and found that Ying Zhi had a bold and humorous personality, which quickly attracted Su Jingyan; Su Jingyan was confused by "Yun Zhi's" hot and cold behavior and began to explore the truth; Yun Zhi discovered Ying Zhi seems to know Su Jingyan and hides secrets about his past; Ying Zhi gradually acquires emotions and begins to resist Yun Zhi's control; Yun Zhi must face the nature of self-evasion and make a choice between shadow and reality; as the power of Shadow increases, Yun Zhi's body begins to weaken, and the two are life-bound; finally Yun Zhi decides to go to the appointment in person and face Su Jingyan with his true self; the shadow eventually dissipates or merges, leaving an ending about courage and growth.