One day, Jintan (Jinta Yadomi), a teenage shut-in, suddenly finds himself face-to-face with his childhood friend, Menma (Meiko Honma). After struggling with Menma's request to have her (unknown) wish granted, Jintan meets with his former friends. Soon, she recalls that the dream was to have their friends all together again.
After running into Poppo (Tetsudo Hisakawa) for the first time in years, Jintan explains how Menma appeared before him and how she has some kind of wish she wants granted. Poppo believes every word he says, and suggests that Jintan has to catch a rare monster from a Nokémon video game.
Thinking that Menma's wish may be for him to begin going to school again, Jintan decides to give it a shot. This also happens to fulfill a promise he made to Anaru...
Yukiatsu tells Jintan and the others that he has just seen Menma. This puzzles Jintan, since Menma was standing next to him the entire time. Jintan and company head out together to search for "Menma" and get to the bottom of this little mystery.
The Menma that Yukiatsu "saw" was just him in women's clothing, a revelation that leaves the rest of the group stunned. Yukiatsu lies motionless on the forest floor after taking a spill, where Jintan tries to talk to him about his situation.
Jintan decides to try going to school one more time, for Menma's sake. When he arrives, he discovers that Anaru is having some serious issues of her own. Unable to stand by while Anaru suffers, Jintan stands up for her, and both leave class right away.
Kayano Ai
Meiko "Menma" Honma
Takayuki Kondo
Tetsudo "Poppo" Hisakawa
Haruka Tomatsu
Naruko "Anaru" Anjō
Miyu Irino
Jinta "Jintan" Yadomi
Saori Hayami
Chiriko "Tsuruko" Tsurumi