Rib Katsuyama
100 years in the future, the descendants of Daigo, Ian, Nobuharu, Souji, Amy, and Utsusemimaru must fight back against the revived Deboth.
Koichi (Kenichi Endo), who destroyed the corrupt Tatsuta group with his brother Toma (Sho Aikawa), disappears from the front stage to protect his younger brother Takayuki (Yuta Sone) who got involved in the incident. did. Meanwhile, the Kansai Kijinkai began to exercise political power and plan to advance into the Kanto region.
A high school student, Miki, loves paranormal phenomenon. She hears a strange rumor about a small shrine. A phantom appears everytime someone tries to destroy it. Getting an archaeologist, Reiko Kaguya, involved, Miki starts investigating it. In the midst of it comes a unisex girl named Hekiru out of nowhere. As Miki digs deeper, she witnesses the unbelievable. A national treasure 'the Sacred Mirror of Prince' was stolen. Reiko and Miki dare to investigate it to retrieve.
Bizarre water starts attacking people. Miki, a fan of paranormal phenomenon, stands up to find out what's going on. Victims have one thing in common; try to catch Hekiru. While Miki protects her, the water attacks Reiko. Without Reiko's help, Miki and Hekiru get isolated. In the 11th hour Hekiru transforms into a monster. A man in black is watching Hekiru, now a monster, from a distance. The Self Defense Force attacks Hekiru.
Hiyori from 7 Years Ago
In 1999, an enormous meteor crashed onto Earth carrying extraterrestrial creatures known as Worms within it. These creatures took on the identities of real humans and then killed them. In order to counter this new threat, ZECT was formed, who in turn created the Masked Rider System to combat the Worms. The battles lasts over seven years, depleting Earth's resources and turning it into a barren wasteland. By present time, power struggles in ZECT have caused a new group, known as Neo-ZECT, to be created. Souji Tendou, a man weilding the Kabuto Zector, decides to sell his power to either ZECT or Neo-Zect for unkown reasons.