After the Rider War, Tsukasa began his new journey with Natsumi and the others until he arrived in a certain world where Magic and Science exists but is now under threat from a known enemy,Tsukasa teamed up with Kamijou Touma to save this world.

This is the story of one not so ordinary teenager as he quickly becomes engulfed in Academy City's dark side, finding himself batteling against monsters, espers and mages alike as he tries to protect himself and his friends as Kamen Rider Faiz. Henshin!

Brutal murders have been occurring all over Academy City, leaving mangled corpses in its wake. As Academy City struggles to deal with the murders, two specialists are called in from Japan to deal with the crisis. But things are not as simple as it seems.