The girls prepare for their group battles, choosing performance outfits and rehearsing. The competition stage is held before a live studio audience, whose votes will determine the winners of each battle. Major A performed Pharrell's "Happy" against Minor B's performance of "Problem" by Ariana Grande. Major B hit the stage with Mark Ronson's smash hit "Uptown Funk" against Minor A's performance of "The Way You Love Me" by Keri Hilson. Based on audience votes, Major A loses to Minor B (189 points to 203 points). Tzu Yu, Min Young, Da Hyun, and Sana move up to the Majors lineup, while Mina, Na Yeon, Chae Ryeong, and Jeong Yeon fall to the Minors. Major B of Natty, So Mi, and Ji Hyo remain in the Majors lineup as they win against Minor A (202 points to 182 points). The losing teams, Major A and Minor A, will compete against each other; the losers of the second battle will be up for elimination. The results of the match-up will not be revealed until the next episode. The final Major line up for this episode is Tzu Yu, Min Young, Da Hyun, Sana, Natty, So Mi, and Ji Hyo.