When the evil Yo-Kai Kin, Gin and Bronzlow makes the Yo-Kai Watch disappear from time so they can help Dame Dedtime prevent humans and Yo-Kai from being friends, Nate Adams finds help in the Yo-Kai Hovernyan, who takes Nate, Whisper and Jibanyan 60 years to the past, when the Yo-Kai Watch was first invented by Nate's grandfather, Nathaniel Adams, while he was a boy. Together, the 2 boys fight Dame Dedtime and her evil Wicked Yo-Kai minions to save the world from her evil plans.

At a certain park, there is a mysterious man, who has red eyes and a black suit, that people can go to and request him to kill someone. His assassinations can never be blamed on him because he takes no illegal action. His strength is in the power of suggestion and the arrangement of events. He accepts these requests, all the while privately mocking the foolishness of those whose unwise wishes he grants.