Makoto "Smile" Tsukimoto and Yutaka "Peco" Hoshino have been close friends since childhood, despite their opposite natures. Peco, an overconfident dreamer who wants to become the world's best ping-pong player, often skips practice and irritates his teammates at Katase High School, while Smile, despite his natural talent, frequently holds back in matches. Their bond remains strong through their shared love for ping-pong.
When a former Chinese national team player arrives in Japan, Peco convinces Smile to visit Tsujido High School. There, Peco faces Kong Wenge and suffers a quick, crushing defeat that shakes his confidence. Seeing Smile's hidden potential, the Katase High coach starts training him to stop holding back, but Smile remains reluctant unless the game stays fun.
As both friends struggle with their reasons for playing, they meet powerful opponents at the inter-high tournament, each dealing with their own inner conflicts. Only the most skilled can survive, and as these young athletes let their unchecked ambitions drive them, the harsh reality of chasing glory becomes clear.