In her past life, nurse Su Yan was diligent and dedicated, but she was framed by colleagues, favored by leaders, and extorted by patients, eventually dying suddenly from accumulated grievance and overwork. Reborn overnight, she returns to her first day of internship, holding all the clinical experience from her past life. Facing the colleague who shifts blame, the partial head nurse, and the rampaging medical troublemakers, she no longer endures and yields, but gathers evidence to fight back and hits back hard on the spot. Relying on top-level nursing and first-aid skills to save lives and heal the wounded, she tears apart workplace bullying and purges the foul atmosphere of the department. Without discussing romance, she focuses entirely on her career, transforming from an intern newcomer into the backbone of the entire hospital and rewriting her tragic fate.