Surgeon Shen Zhiyi has superb medical skills, but is emotionally indifferent due to the indifference of his native family, like a precision instrument. Psychologist Gu Yanshen is an authority in the industry, but he has a strong desire for control and emotional isolation due to childhood trauma. Gu Yanshen regards Shen Zhiyi as the perfect "therapeutic sample" and "emotional antidote", sneaking into her life with a gentle and patient attitude, guiding her to perceive and release her suppressed emotions. When Shen Zhiyi finally learned to rely on and love him in the gentle trap he weaved, Gu Yanshen chose to push her away coldly and return to the role of a cold observer because of the "staged success" of his treatment and his inner fear. Shen Zhiyi, who suffered a heavy blow to his career and a double blow to his emotions, completely sobered up, devoted all his energy to his career, and was reborn in Nirvana. After Gu Yanshen lost the "medicine", he discovered that his illness had completely relapsed and there was no cure. He began to approach again clumsily, even paranoidly, but this time, it was Shen Zhiyi who carved sober and decisive scars on his heart, completing the ultimate "treatment" that reversed the subject and object.