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 otaku each with his/her own troubles and sought relief through a website called "Yui's Lifeguard." When site owner Yui died of a mysterious death, the six who are each experts in their own fields gathered to form "[email protected]
", a "trouble shooter" group that vows to protect Akihabara and solve the problems of its inhabitants.