On the April 22 broadcast of MBCs My Little Television, Girls Day members Hyeri and Yura showed their passion for escape rooms, which are various themed rooms participants are locked in and have to complete different games or puzzles in order to exit. The participants must succeed in solving the clues and escaping within a specific time-limit. Some escape rooms can be very elaborate.
As they had experienced many different kinds of escape rooms, Hyeri and Yura were confident in their abilities. To make sure the two faced a challenge, the production staff of My Little Television spent 40 million won (approximately $35,254) preparing a difficult escape room set. The elaborate escape room was the most expensive set ever prepared by the production staff.