A mysterious agency appeared on an ordinary social anxious girl Chi Xiaoyu's phone APP. It makes ordering a new persona as easy as a food takeaway! In order to complete her work task, Chi Xiaoyu used a persona takeaway, but accidentally starts pulling the bossy CEO, and manages to get him every time, which makes him obsessed with her! Just when Chi Xiaoyu was about to bid farewell to the single life, CEO Su Yang's life-winner persona collapsed!

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.

Hyung Woo and So Young are a pair of orphaned siblings who live in Jae Goo's house. In this difficult family situation, Hyung Woo stopped studying properly and spent his time dreaming of a way to escape everyday life. Han Soo is his opposite; he works hard at school and is determined to live well in the future.