Su Nian returns to her senior year of high school. Facing past regrets and doubts from others, she refuses to back down. With exceptional intelligence and relentless effort, she proves herself by achieving a perfect score and uses her strength to protect her family. During this passionate journey of youth and hard work, she meets Shen Yan, who is just as outstanding as she is. They encourage each other and grow together, writing their youth with sweat and determination. They break down prejudice through their abilities and gain friendship through sincerity. From the school campus to the wider world, they stand side by side, spreading a positive spirit of self-reliance and perseverance.