Summary
The second half of the groups performed their respective songs and the rehearsals for the groups were shown. During the rehearsals of the groups performing f(x)'s "La chA TA", MBK Entertainment's Kim Dani and Clear Company's Ma Eunjin both got sick and were unable to attend practice. Kim Dani quickly recovered from her fever, but Ma Eunjin was forced to leave the show due to her health. After the last performance, the girls were shown their rankings based purely on their individual votes and the additional 1000 points for the girls of the winning teams, with Jellyfish Entertainment's Kim Sejeong overtaking first place.
Group Battle Evaluation
Each A Grade Trainee competed to pick a song, and was then able to choose four other trainees to perform the song with them. Within each of these groups, the positions of Center and Main Vocal were chosen. This Episode featured the groups performing 4Minute's "Hot Issue", After School's "Ah", Miss A's "Good Girl, Bad Girl", Kara's "Break It", f(x)'s "La Cha Ta", and Wonder Girls' "Irony".
Group Battle Ranks
The end of the episode reveals the rankings of the girls based just on the audience votes from the Group Battle Evaluation. Two Different charts are shown, the rankings before and after the 1000 bonus votes given to winning teams is added. Online vote ranking was not shown, and online votes were closed at the end of the episode.
| Trainee | Company | Votes | Rank | Votes +1000 winning votes | Rank after +1000 votes | Rank difference from Ep. 3 |
|---|---|---|---|---|---|---|
| Kim Sejeong | Jellyfish | 204 | 1 | 1204 | 1 | ⇧1 |
| Hwang Sooyeon | Happy Face | 180 | 2 | 1180 | 2 | ⇧54 |
| Im Nayoung | Pledis | 160 | 3 | 1160 | 3 | ⇧30 |
| Kim Juna | Music K | 137 | 4 | 1137 | 4 | ⇧16 |
| Kim Doyeon | Fantagio | 125 | 5 | 1125 | 5 | ⇧9 |
| Jeon Somi | JYP | 118 | 6 | 1118 | 6 | ⇩5 |
| Kim Minkyung | Pledis | 117 | 7 | 1117 | 7 | ⇧25 |
| Kang Yebin | Pledis | 100 | 9 | 1100 | 8 | ⇧18 |
| Park Siyeon | Pledis | 97 | 11 | 1097 | 9 | ⇧31 |
| Kim Sihyun | Independent | 88 | 13 | 1088 | 10 | ⇧26 |
| Park Minji | Magic Fresh | 87 | 14 | 1087 | 11 | ⇧27 |
| Kim Jisung | Happy Face | 80 | 17 | 1080 | 12 | ⇧54 |
| Park Soyeon | LOEN | 74 | 19 | 1074 | 13 | ⇧8 |
| Kim Woojung | Happy Face | 73 | 20 | 1073 | 14 | ⇧68 |
| Jeon Soyeon | CUBE | 72 | 21 | 1072 | 15 | ⇩4 |
| Han Hyeri | Star Empire | 69 | 22 | 1069 | 16 | ⇧2 |
| Kim Sohee | Music Works | 69 | 22 | 1069 | 16 | ⇧8 |
| Lee Suhyun | SS | 68 | 24 | 1068 | 18 | ⇧7 |
| Seong Hyemin | Independent | 68 | 24 | 1068 | 18 | ⇧35 |
| Kim Minji | Kconic | 66 | 27 | 1066 | 20 | ⇧18 |
| Shim Chaeeun | Starship | 62 | 28 | 1062 | 21 | ⇧30 |
| Kim Suhyun | Mystic | 61 | 29 | 1061 | 22 | ⇧25 |
| Kim Yunji | Star Empire | 59 | 30 | 1059 | 23 | ⇧55 |
| Kang Siwon | Independent | 58 | 31 | 1058 | 24 | ⇧15 |
| Kim Dajeong | Annyeong | 56 | 32 | 1056 | 25 | ⇧34 |
| Kang Mina | Jellyfish | 55 | 34 | 1055 | 26 | ⇩23 |
| Jung Chaeyeon | MBK | 43 | 42 | 1043 | 27 | ⇩17 |
| Han Jiyeon | Midas | 41 | 46 | 1041 | 28 | ⇧30 |
| Lee Suhyun | Happy Face | 40 | 47 | 1040 | 29 | ⇧65 |
| Hwang Insun | Show Works | 38 | 49 | 1038 | 30 | ⇩2 |
| Ahn Yeseul | Majesty | 37 | 50 | 1037 | 31 | ⇩1 |
| Heo Chanmi | Dublekick | 36 | 52 | 1036 | 32 | ⇩23 |
| Park Hayi | Canistar | 36 | 52 | 1036 | 32 | ⇧18 |
| Jung Eunwoo | Pledis | 34 | 57 | 1034 | 34 | ⇩21 |
| Park Gaeul | Astory | 32 | 62 | 1032 | 35 | ⇧40 |
| Kim Sohye | RedLine | 32 | 62 | 1032 | 35 | ⇩19 |
| Ham Yeji | Star Planet | 30 | 67 | 1030 | 37 | ⇧23 |
| Kim Hongeun | Happy Face | 29 | 69 | 1029 | 38 | ⇧42 |
| Ki Huihyeon | MBK | 28 | 71 | 1028 | 39 | ⇩34 |
| Yu Sua | MJ | 26 | 75 | 1026 | 40 | ⇧25 |
| Kim Solee | Blessing | 24 | 79 | 1024 | 41 | ⇧55 |
| Kim Jayeon | Happy Face | 23 | 80 | 1023 | 42 | ⇧42 |
| Choi Yubin | Midas | 21 | 84 | 1021 | 43 | ⇧31 |
| Kim Seola | ECUBE | 21 | 84 | 1021 | 43 | ⇧43 |
| Pyun Kangyoon | M2 project | 21 | 84 | 1021 | 43 | ⇧25 |
| Lee Chaelin | Midas | 19 | 88 | 1019 | 46 | ⇧45 |
| Hwang Riyu | NH EMG | 16 | 92 | 1016 | 47 | ⇧14 |
| Kim Taeha | Starship | 14 | 95 | 1014 | 48 | ⇩21 |
| Choi Yoojung | Fantagio | 101 | 8 | 101 | 49 | ⇩41 |
| Zhou Kyulkyung | Pledis | 98 | 10 | 98 | 50 | ⇩44 |
| Kim Hyungeun | Kconic | 89 | 12 | 89 | 51 | ⇩10 |
| Kim Dani | MBK | 87 | 14 | 87 | 52 | ⇩48 |
| Kim Nayoung | Jellyfish | 82 | 16 | 82 | 53 | ⇩46 |
| Lee Haein | SS | 77 | 18 | 77 | 54 | ⇩20 |
| Yu Yeonjung | Starship | 67 | 26 | 67 | 55 | — |
| Ng Sze Kai | CBJN | 56 | 32 | 56 | 56 | ⇩37 |
| Kim Dohee | Blessing | 54 | 35 | 54 | 57 | ⇧13 |
| Yoon Seohyung | &August | 51 | 36 | 51 | 58 | ⇩36 |
| Kim Seokyung | Independent | 50 | 37 | 50 | 59 | ⇩14 |
| Choi Eunbin | Nextar | 48 | 38 | 48 | 60 | ⇧12 |
| Kim Sihyeon | Happy Face | 45 | 39 | 45 | 61 | ⇧8 |
| Kwon Eunbean | CUBE | 45 | 39 | 45 | 61 | ⇩49 |
| Ahn Yumi | Blessing | 44 | 41 | 44 | 63 | ⇧27 |
| Lee Jinhee | Kconic | 43 | 42 | 43 | 64 | ⇩18 |
| Lee Younseo | CUBE | 43 | 42 | 43 | 64 | ⇩35 |
| Ariyoshi Risa | Tipping | 42 | 45 | 42 | 66 | ⇩17 |
| Hwang Seyoung | LOUDers | 39 | 48 | 39 | 67 | ⇩10 |
| Kim Minjung | Independent | 37 | 51 | 37 | 68 | ⇩25 |
| Jung Haerim | Fantagio | 36 | 52 | 36 | 69 | ⇩15 |
| Kim Chungha | M&H | 36 | 52 | 36 | 69 | ⇩46 |
| Yun Yudam | FM | 36 | 52 | 36 | 69 | ⇧7 |
| Im Jungmin | Yama&HC | 34 | 57 | 34 | 72 | ⇩37 |
| Park Sehee | Kconic | 34 | 57 | 34 | 72 | ⇩24 |
| Chu Yejin | Fantagio | 33 | 60 | 33 | 74 | ⇩32 |
| Lee Soomin | Fantagio | 33 | 60 | 33 | 74 | ⇧3 |
| Kang Sihyeon | Star Empire | 32 | 62 | 32 | 76 | ⇩24 |
| Kim Boseon | LOUDers | 31 | 65 | 31 | 77 | ⇧6 |
| Kim Yeonkyung | Midas | 31 | 65 | 31 | 77 | ⇧11 |
| Yoon Chaekyung | DSP | 30 | 67 | 30 | 79 | ⇩64 |
| Katherine Lee | Midas | 29 | 69 | 29 | 80 | ⇩7 |
| Hwang Ayoung | Happy Face | 28 | 71 | 28 | 81 | ⇩17 |
| Seo Hyelin | SS | 28 | 71 | 28 | 81 | ⇩37 |
| Shin Hyehyeon | Midas | 27 | 74 | 27 | 83 | ⇧10 |
| Nam Sujin | Magic Fresh | 26 | 75 | 26 | 84 | ⇩3 |
| Park Haeyoung | 2able | 26 | 75 | 26 | 84 | ⇩5 |
| Bang Joonhee | Blessing | 25 | 78 | 25 | 86 | ⇧11 |
| Lee Seojung | LOUDers | 23 | 80 | 23 | 87 | ⇧8 |
| Kang Sira | Chungchun | 22 | 82 | 22 | 88 | ⇩26 |
| Moon Hyunju | Nextar | 22 | 82 | 22 | 88 | ⇩1 |
| Heo Saem | MJ | 20 | 87 | 20 | 90 | ⇩23 |
| Kang Kyungwon | Pledis | 19 | 88 | 19 | 91 | ⇩3 |
| Lee Seheun | Next Level | 19 | 88 | 19 | 91 | ⇩2 |
| Oh Seojung | M&H | 19 | 88 | 19 | 91 | ⇩60 |
| Cho Shiyoon | DSP | 16 | 92 | 16 | 94 | ⇩77 |
| Oh Han Areum | Blessing | 16 | 92 | 16 | 95 | ⇩3 |
| Kim Miso | MJ | 13 | 96 | 13 | 96 | ⇩33 |
| Niwa Shiori | Majesty | 9 | 97 | 9 | 97 | ⇩26 |