Lista de episodios

The episode begins with the first Star Master, Hwang Min-hyun, explaining the show's concept, followed by the show's contestants being introduced to the "Star Level Test". The Star Level Test involves the contestants rating their own skills out of four stars by placing stickers on their name tags, before being re-assessed by the show's mentors (known as Vocal, Dance, and Rap Masters) through performances. As a bonus, the group with the most stars following the Star Level Test earns the right to preview the show's theme song "Here I Am" a day earlier than the other group.

The show begins with the contestants reacting to the show's first episode alongside the second Star Master, Sunmi. Then it proceeds with the continuation of the Star Level Test. In the end, the K-Group wins with 119 stars over G-Group's 98 stars. After moving into the dormitory (dubbed as "Planet Camp"), the contestants are introduced to the show's theme song "Here I Am" and the accompanying "Signal Song Test". The Signal Song Test re-evaluates the contestants' star levels based on their performance of the theme song. The contestants practice the theme song with the help of the show's Masters.

After the Signal Song Test is over, the trainees vote for a center to represent each group for the final "Here I Am" stage. Sung Han-bin is chosen as the center for K-Group and takes on the overall Killing Part, while Zhang Hao wins the center position for G-Group. The next day, Star Master Hwang Min-hyun announces their first mission: the "K vs. G Group Battle". The trainees with the most views for their signal song fancams get to pick their team members in order of popularity. Lee Hoe-taek and Dang Hong Hai ranked highest in their respective groups and get to choose first. Each of the seven mission songs will then be performed live by one team of each group and a live audience gets to vote individually for each team member. The winning group receives a benefit of 10,000 points and the team with the overall highest score gets a special stage on M Countdown.

The K vs G Group Battle continues as the remaining nine teams rehearse and perform their respective songs. At the end of the performances, it is revealed that K-Group won the battle, and will therefore receive the 10,000 points benefit for the first ranking announcement. The winning team of the special performance on M Countdown is revealed to be the "Back Door" K-Group team (composed of Ji Yun-seo, Kim Tae-rae, Han Yu-jin, Kim Min-seong, Kum Jun-hyeon, Yoon Jong-woo, and Kim Ji-woong).

The 1st Survival Announcement begins with the third Star Master Yeo Jin-goo as the host. Trainees ranked 12th to 51st are announced first before the Top 11 are revealed, starting from the bottom. Jay, Kim Tae-rae, and Park Gun-wook are announced as potential candidates for 9th place, with Jay ultimately securing the spot. Then, the top three contestants are unveiled: Sung Han-bin remains in first place with 8,343,418 points, followed by Seok Matthew with 6,983,610 points, and Kim Ji-woong in third place with 6,944,462 points. Lastly, Jeong I-chan manages to place 52nd and therefore remains in the competition. The show ends with a preview of the next mission, called the "Dual Position Battle".

The trainees gather in the auditorium and the fourth Star Master Minhyuk reveals and explains the second mission. The Dual Position Battle starts and each contestant has to choose one of the twelve songs divided into the three categories "Vocal and Rap", "Vocal and Dance", and "Rap and Dance". Once a team hits its maximum number of members, higher-ranked trainees can replace lower-ranking trainees from the group to free up a spot for themselves. Contestants are urged to include a creative element in their performances, might it be changing parts of the choreography or writing new lyrics themselves. The winning team for each category will receive a point benefit, a special stage on M Countdown, and a promotional banner on the Mnet Plus app. The performances begin, with the "Gang" team performing first. The show ends with the "Tomboy" team about to perform. The five songs created for the next mission, the "Artist Battle", are revealed and viewers get to choose each team's members through the Mnet Plus app.

The remaining eight performances for the Dual Position Mission are revealed. Then the winning team for each category is announced: the "Tomboy" team places first in the Vocal and Rap category, the "Love Killa" team wins in the Vocal and Dance category, and the "LAW" team in the Rap and Dance category, securing 100,000 points for each member and a special M Countdown stage for the entire team. The highest-ranked members of each team, Zhang Hao, Kim Gyu-vin, and Park Han-bin, respectively, receive an additional 150,000 points on top of that.

Fifth Star Master Key explains the third mission to the contestants. All of the trainees are shown practicing for the song they got voted into by the audience but only the ones that remain after the second elimination will get to perform them. Then, the 2nd Survival Announcement begins. Trainees ranked 12th to 27th are announced first before the Top 11 are revealed, starting from the bottom. Lee Hoe-taek, Park Gun-wook, and Kum Jun-hyeon are announced as potential candidates for ninth place, with Park Gun-wook ultimately securing the spot. Then, the top three contestants are unveiled: Sung Han-bin ranks first once again with 7,043,213 points, followed by Zhang Hao with 6,128,945 points, and Han Yu-jin with 6,045,275 points. Lastly, Hiroto manages to remain in the competition by placing 28th.

After the second elimination, the remaining contestants have to re-adjust their Artist Battle teams to fit the intended total of members. Every team that has too many members left needs to vote out a certain amount of trainees, who then have to switch teams to fill the empty spots. The new teams are then shown practicing and preparing for their performances. In a special intermittent segment, the contestants get to perform their respective songs for their families and friends. Then, the first two performances, "SuperCharger" and "En Garde", are shown. The show ends with the "Say My Name" team about to perform.

The remaining three performances for the Artist Battle, "Switch", "Say My Name", and "Over Me", are shown. After the performances, the winner is announced to be the "Over Me" team with a total of 621 points, thus winning the 200,000 points benefit, M Countdown special stage, and a mini fan meeting. With 852 points, Zhang Hao ranks first within the team and receives an additional benefit. The Star Creators are then reminded that only 18 contestants will make it to the final round and that voting will close in under 12 hours.

The 3rd Survival Announcement begins, hosted by the sixth Star Master Jeon Somi. Trainees ranked 11th to 17th are announced first before the Top 10 are revealed. Lee Hoe-taek and Seok Matthew are announced as potential candidates for 9th place, with Seok Matthew ultimately securing the spot. Then, the top three contestants are unveiled: Sung Han-bin once again ranks first with 5,389,363 points, followed by Zhang Hao with 4,342,882 points, and Kim Ji-woong with 3,536,122 points. Lastly, Na Kamden manages to place 18th and is therefore able to compete in the finale. We are then introduced to the seventh Star Master, Kim Jae-hwan, who announces the two songs for the final mission, "Jelly Pop" and "Hot Summer". While choosing which songs to perform, the higher-ranked trainees can push out lower-ranked trainees from the song or position they want for themselves. For this mission, the Star Creators get to decide the killing part. The show ends with Sung Han-bin and Seok Matthew being announced as the temporary killing parts for "Hot Summer" and "Jelly Pop", respectively.

The show begins with a memorial title card for Astro's Moonbin, who had died a day before the broadcast. It then proceeds with the regular content and shows the final 18 contestants performing the theme song "Here I Am" again, after which Star Master Hwang Min-hyun announces that the debut group's name will be Zerobaseone, which will be abbreviated as ZB1, and the second half of the final voting period is opened. The trainees are then shown practicing for their final stages and it is revealed that Zhang Hao will replace Seok Matthew as the killing part for "Jelly Pop", while Sung Han-bin will retain his position. "Jelly Pop" is performed, followed by "Hot Summer", after which the live voting is closed. Then, the trainees get on stage to perform their final song titled "Not Alone". Finally, the votes are tallied and the final members of the debut group are announced, starting from rank 8: Kim Ji-woong becomes the first official member of ZB1, followed by Kim Gyu-vin, Kim Tae-rae, Park Gun-wook, Ricky, and Seok Matthew. Sung Han-bin and Zhang Hao are brought to the stage as candidates for first place, with Zhang Hao ultimately overtaking Sung Han-bin's rank for the first time and becoming the center of the debut group and also becoming the first foreigner/non-Korean to win first place on an Mnet survival show. Lastly, Han Yu-jin is announced as the final member.