Hailey Anne Thomas, a space fanatic around Nate's age, purchases a Space Watch (actually a Yo-kai Watch Model U prototype) from her local anime shop. Using the watch, she meets Usapyon, whom she first thinks is an alien, but is disappointed to learn he's a Yo-kai. Usapyon explains to Hailey Anne his predicament involving his former master, a rocket engineer at NASA

Nate receives the new Yo-kai Watch Model U prototype, but the Yo-kai Cornfused makes him unimpressed with the new features. Meanwhile, Hailey Anne and Usapyon start on a weekly-magazine rocket project to help the latter's old master rediscover his dreams.

Komasan hears about a masseur with the "hands of a god" and decides to go see him. But the masseur is surprised that he can't find Komasan's tense spot. Meanwhile, Nate and his friends try to have fun at the beach, but the day is plagued by the Yo-kai Roughraff, Swosh, and others.

After hearing how making pottery is a popular hobby, Komasan decides to try it out for himself. With Nate, Whisper, and the former's parents out shopping, Jibanyan finally has the entire house to himself, but in the style of The Twilight Zone, he is always freaking out over the slightest sound.

Cadin woke up from his year-long slumber to go see a Next HarMEOWny concert, only to find out it doesn't start for another week. Nate has to settle a dispute between the two bug-like Yo-kai Rhinoggin and Beetler over what kind of bug is more popular among children. At home, the Yo-kai Swelterrier makes the house too hot for the AC to keep up.

After being hit by Baku's sleep smoke, Nate has an epic space fantasy dream, but he keeps putting himself in minor roles. Later on, Nate believes Katie is jealous over everything he does, but finds out it's because of the Yo-kai Minochi. The classic Yo-kai Pittapat asks Nate for help in apologizing to a little girl that the former pulled a prank on.

While grocery shopping with his mother, Nate asks Robonyan to make sure he isn't seen by his friends while still helping her out. A first look is taken at Komasan Taxi, where Komasan and Komajiro discuss characters' controversial actions, aided by fan letters, with that character; they start off with Manjimutt.

One night, Nate is disturbed by the mosquito Yo-kai Scritchy, and Robonyan then appears to reveal Scritchy's role in the future of mosquito-kind, a la The Terminator. While at a public pool, Nate discovers an entire army of Fidgephant disrupting the day off. After he trains on trucks, a more heartfelt side of Jibanyan is revealed as he helps a lost cat find its owner.

During class cleanup, the proud Yo-kai Pride Shrimp complicates who does what by making Bear and Eddie argue over who gets to mop the room (they each want to do it).

At home, the Yo-kai Papa Bolt gives Nate's mother a personality like a thunderstorm (booming down on each sly remark); at the same time, the Yo-kai Frazzle is causing Nate to make such sly remarks (causing literal lightning to strike him). Now, the family has to try to enjoy their dinner with not one, not two, but THREE Yo-kai at once. While at the local Hot Springs, Cheeksqueek once again hits Nate with gas.