On university campuses ruled by the "Heart Mirror" system, emotional stability is the only criterion for a perfect college student. Shen Weixi, a girl from the Chinese Department, desperately suppresses her raging secret love for Gu Yan, the school sweetheart, in order not to be marked by the system.
Until she unexpectedly discovered that Gu Yan was actually the core developer of the "Heart Mirror" system, and she had already been marked by him as the "key sample" of the system.
As the system upgrades, emotional pruning, and the truth about the secret asylum were revealed layer by layer, Shen Weixi went from forbearance and disguise to awakening and resisting. Joining forces with the double-faced school boss and fellow sobers, she launched the ultimate uprising at the graduation ceremony. Using a secret love diary, she tore apart the emotional scam in the name of "for your own good" and regained the truth and freedom that belongs to youth.