Girls Planet 999

The episode opens with all 99 girls being divided into three cells, each consisting of a Korean, Chinese, and Japanese contestant. Groupings are based on a variety of characteristics common to the girls, such as type of career and personal interests. Upon entering the main stage and taking their seats, the host of the competition, Yeo Jin-goo, is introduced to the girls. He is then followed by the rest of the mentors. Yeo then explains the rules of the competition, revealing that a cell of girls can all be eliminated at once; he also explains that if a girl lands a spot in the "Planet Top 9", they will be given the option to rearrange cells.

The Planet Top 9 evaluations continue, and the eventual Planet Top 9 for the episode are announced, with J-group contestant Hikaru Ezaki taking first place, K-group contestant Kang Yeseo taking second place & C-group contestant Shen Xiaoting taking third place. The girls then rearrange or keep their cells, followed by the announcement of voting being open on Universe.

Following the announcement, the girls move into the dorms. The next day, the girls' first morning mission begins where they have to connect their cell with their childhood photos. Whoever gets their cell's childhood photos correctly and quickly will be given priority to choose teammates and form a team, as well as pick their preferred song for the first mission. The actual first mission called the Connect Mission is then revealed where cells will form teams and battle through the same song. The girls then form teams and begin to prepare for the performance.

The current cell rankings are displayed at the beginning of the episode. The contestants begin preparing for their first mission by determining their positions in the performance.

Several days before the team performances, a dance battle is held to determine the order in which the teams will perform. Following the dance competition, the teams continue to practice, with the mentors offering feedback on how to improve.

The group performances continue. The "Fiesta" Team 1 wins, followed by "The Fifth Season" Team 1. The boy group song performances are then shown, with the "Pretty U" team securing the most points out of the three and winning.

After the completion of the performances, the winning team that will get to perform on M Countdown is revealed to be "Yes or Yes" Team 1.

The first ranking announcement begins. The top 16 cells are first announced, with the cell of Choi Yujin, Cai Bing and May securing first place with 2,929,629 points.

During occasional breaks in between announcements, other activities that the girls did together leading up to the day of the announcement were shown.

For the last surviving cell, it was the cell of Yoon Jia, Zhou Xinyu, and Moka Shima versus the cell of Kim Sein, Wen Zhe, and Momoko Okazaki. The former cell remains in the competition as the surviving cell.

Then, the results of the Planet Pass is announced; the Planet Pass is a vote between the mentors in which eliminated contestants would be given a chance to continue in the competition. K-Group's Kim Hyerim, C-Group's Wen Zhe and J-Group's Ruan Ikema are announced to be receiving the Planet Pass, allowing them to remain in the competition.

Following this, the new Planet Top 9 are then announced, with J-Group contestant Yurina Kawaguchi obtaining first place with 4,446,387 points.

After the ranking announcement, the eliminated girls bid farewell to the remaining contestants and leave their dormitories.

The episode begins with the 54 girls entering a room. Host Yeo Jin-goo then enters the room, explaining that the next mission would be the Combination Mission.

Yeo also reveals that cells will be disbanded and cell votes will be phased out, meaning that rankings are all now individual.

He then moves on to explain the Combination Mission, stating that the 54 girls will be split into either 3-member, 6-member or 9-member teams for the mission. There are a total of 6 songs for 3-member teams, 3 songs for 6-member teams and 2 songs for 9-member teams.

To determine their teams, the girls enter doors labeled "3", "6" and "9" which will lead to respective 3-member, 6-member and 9-member team songs where they will have to pick which song they want to perform. Priority is given to the cell of Choi Yujin, Cai Bing and May as they had placed first during the first elimination round.

After forming their teams, the girls then proceed to prepare for their group performances. The girls are first evaluated by the mentors through an interim check before the actual performance.

The performances begin, with the team of Kim Bora, Manami Nagai and Wen Zhe performing rap song "We Are" by Woo Won-jae first.

The episode ends with the team of Kang Yeseo, May, Shen Xiaoting, Su Ruiqi, Moana Yamauchi and Choi Yujin about to perform "Fate" by Lee Sun-hee.

The Combination Mission group performances continue. After all of the performances were shown, the winners of the Combination Mission are then announced.

For the 3-person teams, the team of Huh Jiwon, Fu Yaning and Mashiro Sakamoto wins, securing 90,000 points each.

For the 6-person teams, the team of Kang Yeseo, May, Shen Xiaoting, Su Ruiqi, Moana Yamauchi and Choi Yujin wins, securing 45,000 points each.

For the 9-person teams, the team of Cai Bing, Zhang Luofei, Chiayi, Yoon Jia, Kim Hyerim, Risako Arai, Kim Doah, Hana Hayase and Moka Shima wins, securing 30,000 points each.

The episode begins with the 54 girls being split into four different groups for the four Creation Mission songs, having been arranged through the voting of viewers. The girls begin trying out for the various positions in the song.

In the midst of preparations, the second elimination round results are announced to the girls. The top seven contestants in each group are revealed, followed by the eighth-ranking contestant of each group.

Following this, the new Planet Top 9 is announced. C-Group contestant Shen Xiaoting achieves first place with 5,517,873 points.

Once the Top 9 had been announced, the Planet Pass recipients were announced. They were announced to be K-Group's Kim Suyeon, C-Group's Zhou Xinyu, and J-Group's Kotone Kamimoto.

The Creation Mission continues with the 26 girls rearranging parts and changing lineups for their Creation Mission songs.

Due to the eliminations, some teams has excess or are short of a few members. The girls who are unable to secure a position in their original song are forced to move to the "U+Me=LOVE" team. Snake's Kim Suyeon, Seo Youngeun and Utopia's Shana Nonaka joins the team. Only the "Shoot!" team does not require to remove any of their teammates.

After changing lineups and rearranging parts for their Creation Mission songs. In the midst of the preparation period, the four teams leave the dormitories for a day and embark on a special mission entitled the Planet Teamwork Mission. In the Planet Teamwork Mission, all teams must perform their Creation Mission songs no matter where they go using teamwork. The four teams have to pick any of the four awaiting buses which will ferry them to their destination.

The "Shoot!" team goes to Kim Dayeon's apartment, where they meet Dayeon's mother and write letters to Dayeon in her bedroom. They later perform a demonstration of their song in front of Dayeon's mother and have a lunch meal at a sushi restaurant that Dayeon’s father owns.

The "Snake" team goes to a rural town, where they harvest sweet potatoes and chili peppers for lunch and meet the "Shoot!" team in a video call. They later perform their song in front of the town's residents at the town square along with two trot songs.

The "U+Me=LOVE" team goes to the Lotte World Tower, where they receive a massage and have dinner at a luxurious restaurant in the tower. They later meet the "Snake" team in a video call while eating dinner. To make up for the lavish day that had received, the team performs their song on a suspension bridge located on the 118th floor.

The "Utopia" team goes on a hike, later reaching a paragliding ground. They go on a paragliding flight with the assistance of special instructors. During the process, two of their teammates had to wait before they could launch due to weather issues. They sing their song as they paraglide and take in the scenery.

Upon completion of the mission, the teams return to their dormitories in the evening.

The teams continue to prepare for the Creation Mission. As they rehearse, they are interrupted when the second interim results were announced to the girls. The top 18 contestants are announced in ascending order, followed by the temporary Planet Top 9. C-Group contestant Shen Xiaoting remains in first place while the original centers of the show's theme song consisting of Xiaoting, Kim Dayeon and Hikaru Ezaki, return to first place in their respective groups. Dayeon and Ezaki also place second and third in the temprorary Planet Top 9 respectively.

The episode begins with the girls attending a fan meeting with some viewers of the show. They perform several of their past performances from the Planet Demo Stage and the previous two missions. After the fan meeting, the girls give presents to the audience.

The episode then begins to the commencement of the Creation Mission performances. The "Shoot!" team performs first, followed by the "Utopia" team. The "U+Me=LOVE" team then performs, followed by the "Snake" team. After the performances, the winner is announced to be the "U+Me=LOVE" team, scoring 94.17 out of 100 points.

The episode begins with the O.O.O Mission. The girls are grouped into three different teams; two containing nine members and third containing eight. The girls arrange their parts and practice their performance. After practice, they perform their performances to the mentors. In between performances, the girls are shown video messages and performances by viewers of the show from around the world.

The winners of the O.O.O Mission were determined by the viewers of the show; the contestant of each team that accumulated the most number of YouTube likes on their respective video within 24 hours would obtain a benefit of 90,000 (nine-member) or 80,000 points (eight-member). The winners of the O.O.O mission are announced to be Choi Yujin (Team 1) & Huening Bahiyyih (Team 2), each obtaining the 90,000 points, as well as Seo Youngeun (Team 3) who obtains 80,000 points.

The episode then proceeds to the third ranking elimination. C-Group contestant Shen Xiaoting maintains her first place ranking with 4,161,699 points. After the seventeen survivors are announced, the Planet Pass recipient is then revealed to be K-Group contestant Guinn Myah.

The episode begins with the 18 finalists performing the show's theme song. Due to COVID-19 safety measures, the only live audience was the mentors along with some of the eliminated contestants who were still in Korea at the time. There was also a live Zoom audience who was occasionally shown.

After the theme song performance, the show's host, Yeo Jin-goo, announces the opening of the final voting round, in which all live votes will be doubled. Following this, the audition and highlights videos of the 18 girls are shown. Voiceovers by the girls during the videos also explain why they are pursuing such a career, expressing their desire to debut. Yeo then explains the live voting process, stating that the final votes will include the first round votes from the week added with the final second round live votes. He also revealed that 4,300,524 votes had been cast in the first round from 172 countries. A segment then takes place where Yeo interacts with members from the live Zoom audience. He then introduces the mentors as well as the live audience consisting of some eliminated contestants. The current 9th place candidates are then announced, revealing them to be C-Group's Shen Xiaoting and J-Group's Hikaru Ezaki.

The episode then cuts to a few weeks before the finale; the 18 girls are introduced to the Completion Mission song "Shine". They learn that two teams of nine will be formed, with both teams performing the same song. The lowest ranking contestant, K-Group's Guinn Myah, goes first to pick which team they want to join, followed by the rest of the contestants in ascending rank order. The girls then settle their parts and prepare for the finale. Yeo then announces the debuting girl group's name, revealing to be Kep1er, pronounced as Kepler. Afterwards, the 18 girls then perform "Shine".

After the performance, the episode cuts to a week prior where the girls watch their audition videos. They also watch videos aimed to their future selves that they filmed when the show began, as well as similar videos filmed by some of the eliminated contestants. The girls then perform "Another Dream", a pop ballad song. Afterwards, Yeo interacts with another member of the live Zoom audience, as well as eliminated K-Group contestant Choi Yeyoung.

The episode then cuts to the days leading up to the finale. The girls are treated to a party where they reviewed artworks they created for one another as well as receive a lavish dinner. Afterwards, they also view polaroids that serve as memories of their time participating in the show. They then settle in front of a projector and watch video messages by some of their parents.

Yeo then begins to announce the debut lineup of Kep1er. J-Group's Mashiro Sakamoto places 8th, followed by J-Group's Hikaru Ezaki in 7th. K-Group's Kang Yeseo, Seo Youngeun, Kim Dayeon, Choi Yujin, Huening Bahiyyih and Kim Chaehyun place subsequently in ascending rank order. For the 9th place candidates, they are announced to be C-Group's Shen Xiaoting and K-Group's Kim Suyeon and Guinn Myah. Guinn Myah is announced to be 11th. Then, the final 9th ranker and last contestant to enter Kep1er is announced to be C-Group's Shen Xiaoting, scoring around 50,000 more points than Kim Suyeon.