Sho Yamato is a boy who enjoys MTB (short for "mountain biking") a whole lot. He's always practiced at the "X-Zone" (a place which his dad Takeshi made for MTB) with his friends Kakeru and Makoto while riding on a bike his dad has built called "Flame Kaiser". One day, he was challenged to a race by a MTB team called Team Shark Tooth and whoever won the race will get the X-Zone. During the race with Team Shark Tooth's leader Gabu Samejima, black smoke suddenly covered the ground around them, and they were sent to another world that's also called the "X-Zone."
Mikoto Shinozaki is a student of 1st year of Sakura high school where he is bullied by his superiors, where his personality is inconspicuous, quiet and friendless but that may change when Yousuke Fukazawa invites you to join the cycling club where Mikoto Shinozaki is a world where his determination and spirit takes him beyond what we all expect and so making a big change for both to those around them, turning everything into an adventure where the rider spirit is rekindled beyond standard in the world of sports
小野田坂道オタクは高校に入学したばかりで、アニメクラブに参加する予定です。 中学生の頃、小野田さんにはアニメやゲーム、秋葉原などオタクの話ができる友達がいなかったので、アニメクラブで友達ができたらいいなと思っていましたが、解散したことがわかりました。 クラブを再建するために、彼は参加したい他の4人を見つけようとします。
高校入学をきっかけに長崎から鎌倉へ引っ越してきた女の子、舞春ひろみ。新しい土地に新しい学校、そして新しいともだち。そんなわくわくな日常との出会いはいつも自転車といっしょ！南鎌倉を舞台に、女子高生たちの自転車のある青春がはじまる――！！
運動能力のない大学1年生の倉田亜美さんが、駅前で折り畳み自転車を見て突然恋に落ちた。 彼女の新たな愛に触発されて、彼女は自転車を購入し、サイクリングを学ぶために貯金を始めます。