Sk8 the Infinity follows Reki and Langa, who unwittingly enter a perilous skateboarding race known as "S." While Reki loves skateboarding, Langa has never done it before. Together, they wil embark ...

Reki's passion for skateboarding further ignites when he meets Langa, who returns to Japan from Canada. Langa's exceptional skateboarding impresses Reki, and they end up competing in the "S" races.