In his previous life, Xu Jiqing died while saving his companion Su Xia in a snow mountain accident. Because of this, Su Xia blamed herself and suffered from insomnia for a long time, and unexpectedly reborn and returned to high school. At this time, Xu Jiqing was still an introverted transfer student from an ordinary family background, and he also showed extraordinary talent in mathematics. In order to make up for her regrets, Su Xia took the initiative to approach and help him, accompany him out of isolation and difficulties, and strive to change his growth trajectory. Through mutual support and joint efforts, the two gradually established a deep friendship, faced the challenges of academic and life together, and finally achieved their respective life goals.
