In Mobius, riders are becoming more common. First the Blade riders, then W and OOO, and now, a new rider appears. Takeshi Narumi makes it his job to destroy the Phantoms plaguing his home hoping to someday reunite with his friend Sonic/Eiji Hino. On the way, he and his twin sister Hana team up with Luna Hashimoto and Larry the Lynx. Side Story to Gammatrons Count the Medals.