Zhang Guilan, a delivery worker at a community dining service point, works from early morning till late at night to deliver hot meals to elderly people living alone, and also gives three colleagues a ride to and from work along the way. Pouring her heart out, her colleagues instead turn around and strike back, spreading rumors that she is domineering and induces the elderly to give bad reviews, forging reputation to snatch the position of head manager, and humiliating her to her face that she only knows how to work and cannot be a manager. Zhang Guilan suffers all grievances, yet refuses to drag the elderly to testify or voice her grievances, only burying her head in delivering every hot meal on time. The subdistrict conducts a thorough investigation, uncovering the truth about colleagues taking kickbacks and forging voice recordings, and the villains step down on the spot. In the end, relying on her righteousness and reputation, Zhang Guilan successfully rises to power and becomes the head manager of the district, becoming the most trusted heartwarming person to the elderly.