Practical music academy entrance exam instructor Sung Jeon. He may be a nobody now, but once upon a time, he was a member of an idol group.

That is, until ten years ago—Right up until the “visual member,” whose only asset was his face, blew everything up with a completely shameless dating scandal with a first-tier girl group idol who was way out of his league, with absolutely no sense of professional ethics.

“What, idols aren’t allowed to have feelings?”

“What, idols can’t date?”

“Idols are people too.”

“Respect my feelings, too.”

Back in his “failed idol” days, Sung Jeon had been too gentle, too soft, and too timid. So instead of punching the guy who said that crap, he just listened, tears streaming down his face.

“If I’d had this personality back then, I’d have smashed that bastard’s jaw…”

Yeah. If he could go back to that time—

When he opens his eyes again, 23-year-old Jeon is in the dorm of the unknown idol group BNCZ.

A newly granted second chance. To finally stand on the year-end stage he’s dreamed of all his life, Sung Jeon sets out on “Project: Rehabilitate Love-Starved Serial-Dater Seon Woojin.”