"Hyeonsu lived a healthy life by doing all kinds of odd jobs alone without his parents, relatives, or brothers. He even didn't shy away from working as an asshole! Then one day, after almost dying, he woke up... I had been possessed by some idol?! Idol? A member. The Internet? At least 50 years have passed since Hyunsu lived, and there is a risk of disbanding soon... Cha Soo-hyun, the savior of the group 'Technician' who suddenly lost his way of life. But this person... looks exactly like the master Hyunsu used to serve...?!"