Sakamichi Onoda is an otaku,who has just entered high school and plans to join the anime club. In middle school Onoda did not have any friends with whom he could talk about anime, games, Akihabara and other otaku things and is hoping he can make such friends in the anime club, but he finds out it has been disbanded. In order to reestablish the club he tries to find 4 other people who would like to join.

Since he was a little boy, Onoda has ridden his mamachari – a bulky bicycle with a step-through frame mainly used for short rides, such as for casual fun, to pick up groceries or to go to Akihabara every week to check out or buy otaku things. His fellow freshman, Shunsuke Imaizumi, a cyclist, while training, notices a Onoda riding his mamachari up a steep road.

Shōkichi Naruko, visit Akihabara to get some Gundam plastic models for his younger brothers and he meets Onoda, who caught his attention because of the his cycling skill on the mamachari and later finds out they go to the same school. Later on, both Naruko and Imaizumi try to convince him to join the bicycle racing club, but will he?