A mysterious man called Es/Kamen Rider Eden has emerged, committing simultaneous acts of terror across the world, with thousands of believers following his faith. While the people fall one by one and the world delves into chaos, Aruto Hiden stands up to stop him. Isamu Fuwa, Yaiba Yuia, Gai Amatsu, plus Jin and Horobi of MetsubouJinrai.net also transform into Kamen Riders and fight against the enemy while struggling to seek the truth.
Fuwa has been told that his true past, the one that hadn't been falsified, has been "boring and uninteresting", as Yua overhears and notices that Fuwa cannot hide the look of disappointment on his face. "You are Vulcan! Engrave it in your head!" In order to regain his confidence, Isamu Fuwa looks back at his life and battles as a Kamen Rider! However, this plan of his starts to head in an unexpected direction...!