During the break time of a certain high school, an emergency school broadcast was played. It is said that a female student at school was attacked by a passerby. While the students are upset, film research club member Katogi (Okudaira Daikane) witnesses the angry expression of his classmate's stark face (Yamada Anna). Later, for some reason, Katogi boarded the first train and encountered a stark scene in the same train. While the two of them are alone in the car, an awkward atmosphere flows, and Katogi and the stark scenery begin to find out why they got on the first train.

Katogi and the bleak landscape decide to work together to track down the culprit of the murder. Despite these two, the students of Takuboku High School are busy preparing for the school festival. Sanada (Ai Yoshikawa), Utako (Aonagisa Nakata), and Nogi (Maka Ozaki), who are in charge of producing class T-shirts, have a discussion at their favorite family restaurant. A peaceful time after school spent with the usual members. However, when Utako, who can do things at her own pace, objects to Sanada's ideas, a small ripple occurs between the three...

Terawaki (Asahi Ito), a member of the folk song club, is secretly in love with his junior, Katsuragi. At her amusement park, Soleil Land, which came to commemorate her retirement from club activities, she planned to tell her about her feelings, but Terawaki decided to go with her junior, Itori (Ayumu Mochizuki). Ended up riding a Ferris wheel. Terawaki, who actually wanted to ride with Katsuragi, takes a dissatisfied attitude toward Itori, but Itori's shocking words take an unexpected turn... A thrilling 22-minute walk in the air begins.