Xie Zhilin and Chen Yaoyao met in high school. They both got into the same school and became deskmates, and that was where their story began.
In the second semester of their first year, students had to choose between the sciences and the humanities. By a twist of fate, they both chose the sciences, but they ended up in different classes.
After the college entrance exams, they started dating and spent every day happy and content. Their friends all thought they would be together forever, but later, certain events drove them apart.