환불원정대(Produced by 지미유)

안무 연습 시작! 눈 감고도 안무가 나오게 연습만이 살 길! "환불 원정대" 드디어 으로 돌격! 한 마음으로 만든 무대 첫 데뷔 무대 비하인드~!

With only several days left before the debut, the members of Refund Sisters focus on making their performance as perfect as possible. Meanwhile, one of the managers heads off to MBC in Sangam to attend the meeting with the director of the show. Now that the preparation work is complete, the members stand nervously on the stage for the music to start.