Akihabara is a Tokyo district full of mangas, anime, electronics, video games, figurines, etc. It is a place that gathers fanatics of such themes, people who are commonly referred to as otaku. Page, Box, Akira, Taiko, Daruma, and Izumu are six otakus, each with his/her own troubles who sought relief through a website called "Yui's Lifeguard". When the site owner, Yui, died of a mysterious death, the six, who are each expert in their own fields, gathered to form "Akihabara@DEEP", a "troubleshooter" group that vows to protect Akihabara and solve the problems of its inhabitants.