They save each other.
Xu Yan: A slacker, ranked last in his grade. His parents are divorced, but he's always optimistic.
Jiang Jing: A top student, ranked first in his grade. Orphaned at a young age, he was raised by Grandpa Jiang, the neighbor. He's withdrawn and has few friends.
In ninth grade, Xu Yan met the person who would save him. Two years later, the two met again at Fuyang No. 1 High School. At the time, he was only in his second year of high school...
Theme: Love has no gender