The results of the remaining one-on-one battles are revealed. Somi, Mina, and Natty remain Majors, while Minyoung, Eunsuh, and Momo remain Minors. Jihyo replaces Chaeyoung in the Majors lineup, sending her to Minors. Eunsuh is eliminated from competition because she forgot her choreography in the middle of her stage. The contestants' next mission is to be a group challenge between minor and major teams. The teams are divided into Major A (Mina, Nayeon, Chaeryeong, Jungyeon), Major B (Natty, Somi, Jihyo), Minor A (Momo, Jiwon, Chaeyoung), and Minor B (Tzuyu, Minyoung, Dahyun, Sana). The match-ups are revealed to be Major A vs. Minor B and Major B vs. Minor A. The winning teams will make up the new Major lineup. The losing teams then will compete against each other. The losers of the second battle will be up for elimination. The girls are shown preparing for the competition, but no match-ups were shown this episode.
