The story has passed since Kamen Rider Holy Blade's transformation, Kamiyama Feiyu, and other swordsmen struggled to save the world for 8 years. Fei Yuzhen adopted the boy Xiao Lu, who lost his parents because of his involvement in the war. Fei Yu's true friend Mamiya and editor Sudo Mei also help take care of Xiao Lu. Fei Yu really hoped to make up for Xiao Lu's lost fatherly love, but he couldn't heal his wounds. The 11-year-old Xiao Lu has not shown a smile yet.
At the same time, Tomikamiya Kento, who became a translator, will soon have a relationship with Yuina Tachibana Get married and live a fulfilling life. However, strange things began to happen around the swordsmen, and the holders of the holy sword disappeared one after another. When Shindo Rintaro begins to investigate the matter, Kamen Rider Baken is surprised that the Sirens suddenly appear. Shinozaki Shinjiro, who was released from his transformation, claimed to be Rintaro's father, which confused Rintaro.
The sage was attacked by Bajian, Xiao Lu did not return from school, Fei Yu Zhen went to look for it but was also attacked by Ba Jian. What kind of terrifying power is hidden in the fantasy control book? As time goes by, Fei Yuzhen and his party are waiting for the greatest and final tribulation.