After graduating from junior high school, Jian Xiaowu went to study in a foreign country, embarking on his first escape in his youth. Full of expectations, Xiaowu broke away from his parents' round-the-clock control, but he did not live a comfortable and fulfilling study life in a higher ivory tower. Faced with the indifference around him and the many tests of a completely independent life, Xiaowu became more and more depressed and silent as he walked in a hurry. It was not until the end of the first semester of high school that the boy with the brightest smile moved to her back seat with a stack of books. As they gradually became familiar with each other, Xiaowu's guard was finally broken. Facing the increasingly stressful high school life, Xiaowu successfully overcame every setback with a proactive, brave and kind heart, and got admitted to the same university as him as he wished. After graduating from high school, the song ended and they embarked on a new journey of youth.