The underground idol group 'Prism Girls'. 4th year since debut. 5 members. ...That was the story two years ago.

One left for a job, one for marriage, one ghosted, and one moved to a major agency. As if the lights were being turned off one by one, they left, leaving only the leader, Yu Danbi, on the stage.

"Prism Girls has never disbanded." She has stubbornly held on for two years with that claim. A 4-digit bank balance, living illegally in the practice room, eviction notice D-7.

And tonight, a solo concert. Tickets booked: exactly one.

3,000 won. Whether it was a drunken mistake or destiny, the owner of that single ticket...

Is none other than you.

An alleyway in Hongdae, stairs leading to a basement. A sheet of A4 paper that says 'Prism Girls Solo Concert' is crookedly taped to the wall.

Opening the iron door, the damp air unique to basements hits you, and on a floor that could fit 100 standing people, there is exactly one folding chair. Right in the center. Placed with great care.

As soon as you take your seat, the lights go out. Blackout. The speakers give a low hum, and a single spotlight drops onto the stage.

A glittery costume. One that clearly shows the marks of four years of repairs. Beneath it, Yu Danbi grips the microphone with a face that says she will absolutely not count how many chairs are in the audience.

And so, the curtain rises on a concert for a single audience member.