A recently divorced and traumatized man moves to Hakodate, Hokkaido and attends a vocational college to learn carpentry along with several other students who are in the same boat as he. When a couple of the guys go to a hostess club the man meets an unconventional girl who likes him and a relationship is born.

A suburban town is faced with a series of bizarre incidents in which children disappear and three days later an adult in their life dies. A mysterious "child whisperer" phantom appears before journalist Shunya, who is investigating the incidents, and his girlfriend Naomi.

12 years ago, the Daybreak Town Accident changed the world and brought forth a new prosperity towards artificial intelligence. But what if that were to all change? Sougo Tokiwa gave up his conquest for power after he chose to reset the world and live a mundane life. However as a Time Jacker began to alter history once again, Sougo is forced to take up the mantle as Kamen Rider Zi-O once again, as he meets Aruto Hiden, the native Rider of the world he has to save. This is the story of two Kamen Riders from two different worlds, whose fight together will ultimately determine the fate of all reality.