Due to a series of bizarre incidents, Tomo Shinnosuke and Shijima Kiriko were ordered to come to Tenkuji Temple, hoping that Tsukimura Akari (Osawa Hikaru) and Tenkuji Takashi (Nishi Meijun), who were witnesses, could help to find out the truth behind the incident. When they arrived at Tenkuji Temple, they found that Takashi was in a bitter battle with the Eye Demon. Shinnosuke transformed into Kamen Rider Ghost to join the battle. At this time, time and space were distorted by something, and Shinnosuke and Takashi instantly returned to ten years ago. There, Tenkuji Takashi saw his father Ryu (Nishimura Kazuhiko), who should have died, and himself as a child. On the other hand, because the two of them strayed into the turbulence of time and space, Roidmude, who should have been destroyed by Kamen Rider Drive in the present time, was resurrected again. In order to stop the invasion of the devil, Kamen Rider Specter, Mach, and Chaser appeared one after another and launched a great battle between good and evil with their opponents. Who would have thought that the resurrected Roidmude would be unprecedentedly powerful. If Takashi and Shinnosuke could not return to their original world in time, mankind would be in danger of extinction. But when Zun found out that his father was about to be killed by the enemy, he decided to stay in the past to change his father's fate. Little did he know that he was walking step by step into the trap carefully set by the genius of the century, Leonardo da Vinci...