Five high school students with different personalities met in the same class and got to know each other because of the "youth challenges" they experienced together. As the college entrance examination approaches, they start their own struggles and struggles under the five main lines of study, friendship, love, family and dreams. They influence each other, sometimes have friction, and also support each other. They experienced loss, misunderstanding, growth, dream chasing, compromise and reconciliation, and gradually defined their own youth through pain and laughter. In the end, in the summer of farewell, the five people discovered that their true belonging was not in the outside world, but in their hearts and bonds, leaving an unforgettable and unique mark of youth together.
