To prove themselves to get to X-City for Kyoichi, Sho and Mokoto compete in his test. When Mokoto fails the first test, she challenges Kyoichi to an Idaten Battle occuring one week later. Can Mokoto defeat Kyoichi?
After defeating Prince Ryota, Mokoto was on the brink of giving up. Meanwhile, Pete & Danny of Team S.T. have sabotaged their bike trailer and framed Mokoto resulting in both of them ending up getting angry with each other. When Pete & Danny challenge them and have the advantage in rainy weather, can Sho & Mokoto make up and defeat Pete and Danny?moreless
Part 1: During a BMX race against the Shark Tooth MTB team, Sho Yamato and his friends Makoto and Kakeru get sucked into a Black Hole and end up in the X-Zone: a world of Idaten Battles. Upon arrival, they are challenged by a Rogue MTB team and get help on how to do that by a mysterious masked MTB Rider.
Part 2: Sho, Makoto, and Kakeru are accused of being associated with the Rogue MTB team by the local X-Zone Police. With the help of the Rogue MTB Boss and the mysterious masked MTB Rider, they escape alongside an owl name Hosuke. However, the Police Captain and his men are not far behind.