Students ponder their futures as middle schooler Mob wrestles with career uncertainty. Meanwhile, a giant broccoli tree in Seasoning City spawns a new religious cult.
Salt Middle School students prepare for a cultural fair while yokai hunter Haruaki Amakusa seeks Reigen's help to defeat the Hundred Demons and prevent the resurrection of the Great Yokai King.
Mob started to feel that girls are looking at him, and this causes him to think that he is starting to become popular. Dimple believes that it's just misunderstanding and asked mob to become a founder of Psycho Helmet Cult.
All of Seasoning City has become brainwashed by the Psycho Helmet Cult. Mob and Reigen rush to destroy the Divine Tree while Teru discovers the identity of the cult's leader.
Mob finally confronts the one responsible for the people's strange behaviors and obsession towards the Divine Tree and Psycho Helmet Religion. However, he first has to face off Teruki, who has been brainwashed by Psycho Helmet.
Mob's attitude seems to change once he hears what Dimple says. Mob ends up apologizing to Dimple because he had gotten carried away from the thought of being popular and didn't hear what Dimple had to tell him before.
Kurata Tome has always dreamed about communicating with the universe through telepathy. However, as winter break comes closer and closer, she makes the decision to disband the Telepathy Club.
The group somehow finally makes it to the summit of Mt. Mudboat. Takenaka had been up all night reading all the texts about UFOS and the Telepathy Club comes together to send a telepathic message into Space, but there is no UFO in sight.