The competitors meet each other for the first time. Rookies, veterans, and even previous winners start over with a new leaf. Under the gaze of the host MC Taeyeon, the girls begin their first round of Up Down Battle. They vote on each other's performances with a thumbs up or down. Some prevail in pride, while others face defeat in disappointment. It is just the beginning, but the tensions are already rising. (thetvdb.com)