The series is about an extreme sport called "Stride," which includes 6 players on a team doing relay events around communities. The plot is set at Honan Academy, where first-year high school students Takeru Fujiwara and Nana Sakurai are attempting to recruit members for their "Stride" club. They ask Riku Yagami to join them, with the assistance of Takeru and Nana. Their objective is to compete in and win the "End of Summer" tournament, which will be held in Japan among other schools.