A group of children living in a junior high school in Northeast China enjoy the joy of youth every day, and seek a happy life in the study life from 5 am to 9 pm. They feel the ignorance of love, experience the frustration of failure, grow up slowly in the process of making friendships, learn to be grateful for the nurturing of teachers, and know how to cherish the rare friendship. They interpret the best youth. The humorous and funny show the best memories of youth, and the laughter evokes the audience's initial memories and touches their hearts.