The series revolves around the extreme sport “Stride”, a sport where a team of 5 plus a relationer runs relay races in towns. Nana Sakurai, a first-year Hōnan Academy high school student decided join Stride club after she watch Best Stride Ever video two years ago alongside her classmate, Takeru Fujiwara and Riku Yagami. Upon learning the Hōnan Stride club has been inactive for two years following a violent incident. They decided try to re-establish the school’s “Stride” team by recruiting 6 members. Both Takeru and Riku asked Nana to become a relationer as well as a manager. Their goal is to join other schools to compete and win Eastern Japan’s top Stride competition, the “End of Summer” as well develop friendship with Saisei academy stride club who also an idol group called “Galaxy Standard”.