Kang Seulgi is the singer of a rock band named "Black Velvet". The group is pretty popular among girls because of their androgynous vibe and obviously because of Seulgi’s beauty.

They are in a small company and do concerts in bar and small event, slowly increasing their fanbase around the small town of Hongdae. One day, their bassist went sick and leaved the group, leaving an empty space for a possible new member.

The group decided to organized auditions in a small bar late at night.