Qiao Nian and Lu Shiyan are recognized as "rivals" in Qingteng Middle School. One is flamboyant and outgoing, the other is cold and abstinent, and they pinch each other whenever they meet. One day, Qiao Nian accidentally awakened the "campus emotional radar" after a fierce argument. She was shocked to find that when Lu Shiyan was sarcastic with her venomous tongue, anxious orange and intense red were dancing in her mind! This iceberg academic master secretly blushed for her? Qiao Nian began to carefully test and interpret his conflicting emotional signals: the golden affection that arose when he passed by, the sour cyan jealousy when he saw her talking to boys, and the gray depression when facing academic pressure... The golden finger not only allowed her to see through the secret crush of her rival, but also allowed her to see clearly the gossip and malice on campus. Faced with being framed by his love rival, Qiao Nian used radar to cleverly counterattack, making the opponent's disguise invisible. However, side effects of abilities also appear quietly, including headaches, dizziness and even mood disorders. As Lu Shiyan faced deeper secrets and external pressure, his emotional signals became extremely complex, even temporarily blocking the radar. Qiao Nian must learn to balance the advantages and costs of Golden Finger and take the initiative. When she risked touching his deepest secret, Lu Shiyan's cold disguise finally broke and he reached out to her. The arch-rival relationship is in name only, and the secret love seems to be reciprocated. But the greater crisis and mystery have just surfaced...