In a desolate future, the external environment is no longer suitable for survival. High towers stand tall, sheltering the people gathered here and constructing a stable habitat. A Mi has always harbored yearnings, hoping that after coming of age, he could become an outstanding high tower guide. However, his innate physical constitution is limited, making it difficult to control special powers. To break through his own limitations and continuously grow, A Mi leaves the tower together with the team to gain experience outside, getting to know many companions marching shoulder to shoulder. In the high tower joint exercise, A Mi shines brilliantly and gradually steps into everyone's line of sight.