David Loman, a simple country bumpkin who accidentally becomes a big boss in the criminal underworld. A decade passes, and life seems to go on as usual - solving daily problems for locals and receiving "protection fees" - until one day a deity tells David through a medium that he needs to find a double to avoid a catastrophe. Panicky, the boss seeks help from Old Ho, who agrees to pass as David for a few days, but is assassinated when attending a gathering with fellow gangsters.

Qing-han, an ordinary and introverted high school student, has a secret ability: by squinting, he can see “scores” above people’s heads based on appearance, academics, and social skills. He records these scores in a notebook, yet still fails to win over his crush, the school beauty Ming-zhen. When the notebook falls into the hands of Chun-xi, a struggling student secretly in love with top student Zi-xue, she threatens to expose Qing-han unless he helps improve her scores. After his guidance, Chun-xi confesses successfully—only to fall into Zi-xue’s trap and end up in deep trouble. Meanwhile, the newly single Ming-zhen grows closer to Qing-han, and Zi-xue’s true nature emerges. Qing-han hesitates between Ming-zhen and Chun-xi because he is obsessed with academic scores. He longs to be close to others but doesn’t have the courage to open his heart. How should Qing-han find his own happiness?