该剧讲述了乐观开朗的高中生苏在在，被清冷孤僻的张陆让吸引，她用自己小太阳般的温暖治愈着张陆让的自卑，而在学霸张陆让的带动下，苏在在也收起自己的散漫心思，变得更加奋进向上。他们一路相伴成长，为爱成为了更好的自己。这是一个双向奔赴美好的纯美校园故事。
Su Zaizai grew up in a good family environment and became a person who doesn’t easily get obsessed with boys and doesn't blindly follow others. On the first day of high school, Su Zaizai disdainfully dismissed her good friend's obsession with boys but had an instant face-slapping moment when she encountered Zhang Lurang. Su Zaizai fell in love with him and decided to take immediate action, transforming herself into a clingy follower behind her crush. Zhang Lurang is a person who appears to be quite confident on the outside yet constantly doubting himself on the inside. Because of his genius younger brother, Zhang Luli, Zhang Lurang is constantly compared to him by his mother. Zhang Lurang's life has always been like living inside a thick shell. He’s introverted, speaks little and keeps everyone at a distance. However, after meeting Su Zaizai, light pierces through Zhang Lurang’s shell.
No início do outono de 2012, a Yucai Middle School dá as boas-vindas a uma alegre estudante transferida chamada Su Zai Zai. No primeiro dia de aula, Su Zai Zai se apaixona à primeira vista quando encontra o distante e legal Zhang Lurang. Ele é introvertido e fala pouco, parece composto e educado, mas mantém todos à distância. No entanto, sua vida muda quando ele conhece Su Zai Zai, que o faz entender o significado de si mesmo e aos poucos começa a entender como planejar sua vida. Ambos desenvolveram sentimentos um pelo outro lentamente e ganharam felicidade juntos.
Su Zaizai n’est pas du genre à s’enticher d’un garçon. Pourtant, lors de son premier jour au lycée, elle aperçoit Zhang Lurang et c’est le coup de foudre. Oubliant bien vite ses principes, elle devient l’ombre du jeune homme et le suit partout où il va en espérant qu’il la remarque. Constamment comparé à son génie de frère, Zhang Lurang se renferme sur lui-même. Introverti et peu bavard, il fait tout son possible pour garder les autres à distance. Mais lorsqu’il rencontre Su Zaizai, la carapace qu'il s'est forgé semble se fendre petit à petit et il entrevoit la possibilité d'un bonheur inespéré.
Tras un encuentro accidental, la adolescente Su Zai Zai se siente atraída sin remedio hacia Zhang Lu Rang, su adorable pero distante compañero de clase.
