Makoto Tsukimoto (nicknamed Smile) is a quiet high schooler who has been friends with energetic Yutaka Hoshino (nicknamed Peco) since childhood. Both are members of the table tennis club and possess natural talent, though Smile's reserved personality prevents him from unleashing his full potential. When legendary coach Jou Koizumi recognizes Smile's abilities, he begins training him for the upcoming tournament. As Peco's confidence faces harsh reality and Smile discovers his competitive spirit, the two friends navigate the intense world of competitive ping pong while confronting their dreams, limitations, and what it truly means to be a hero.