Si Jiuyin returned to the Si family from the countryside after going through many ups and downs. Faced with the difficulties of her partial family and hypocritical stepsister, she is neither humble nor overbearing, relying on her excellent knowledge and skills to protect herself and the friends around her. By chance, I met the steady and reliable Bo Xiyan, and the two went in both directions and supported each other. Stick to your true feelings in campus life, fight against prejudice and campus bullying, uncover the mystery of your life experience, and use medical skills and wisdom to support justice. The story conveys the concepts of independence and self-reliance, good and evil are rewarded, and interprets the growth and sincere and touching love of young girls.