One day while searching for bugs in the woods near the town of Springdale (Sakura New Town in Japan), a boy named Nate (Keita) comes across a peculiar capsule machine next to a sacred tree. When he opens one of the capsules up, it brings forth the Yo-kai Whisper, who gives Nate a special device known as the Yo-kai Watch. Using this, Nate is able to identify and see various different Yo-kai that are haunting people and causing mischief.
Episode 01 – Yo-Kai Are Real! / The Spooky Intersection
Nate is introduced into the world of the Yo-kai when he frees the Yo-kai butler Whisper from a capsule machine and receives the Yo-kai Watch, just in time to save his parents’ marriage from the unintentional disruption of the Yo-kai Dismarelda with her husband Happierre.
Episode 02 – The Famous One / Why Did You Say That! / Fumi’s Depression
Nate tells Whisper that people are talking about a specific Yo-kai, which Whisper says is a kappa; they try to find it, while the kappa Yo-kai Walkappa tries to get their attention. Nate’s day at school is disrupted by the Yo-kai Tattletell, who possesses his friend Katie and makes her reveal a personal secret that embarrasses him. Later, when Katie is feeling down and won’t say why, Nate uses Tattletell to figure out wha she is hiding.
Episode 03 – The Rare One / Yo-Kai Manjimutt / It’s You Gurerulin! / Manjimutt Part 2
Whsiper talks about the Yo-kai Noko, and Nate sees it, but Whisper doesn’t. Nate and Whisper meet the man-faced dog Yo-kai Manjimutt, who is soon arrested. Later, when Eddie begins to act like a rebel, Nate and Whisper discover he is being possessed by the Yo-kai Roughraff. While in prison, Manjimutt finds a want-ad for a barber.
Episode 04 – Yo-Kai Dictionary / Yo-Kai Himojii / Yo-Kai Wasurenbō / Jinmenken Part3
While Nate cleans his room, Whisper gives him the Yo-kai Medallium to store his Yo-kai Medals. Nate and Whisper discover the Yo-kai Hungramps is at the local convenience store, making people unnaturally hungry. Later, Nate and Whisper discover that the reason many people in class are all forgetting things is because of the Yo-kai Wazzat. Manjimutt’s barber shop is ruined because everyone thinks he is a dog groomer.
Episode 05 – Jinmenken Part4 / Yo-Kai Maborōshi / Let’s Exorcise
Manjimutt’s newest venture, a photographer, is disrupted when his client discovers he is not the one who was supposed to photograph her. On Valentine’s Day, Nate and Whisper discover that Eddie and Bear are under the spell of the illusion casting Yo-kai Illoo. Later, when Jibanyan moves into Nate’s house, Nate must save him and Whisper from being rid by an exorcist who is hired after Nate’s parents begin to realize Jibanyan’s behavior.