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The contestants are introduced and divided into two groups, setting the stage for their training and challenges. They face their first mission, where they must showcase their potential and individuality under the guidance of Park Jin-young.

The girls' s second mission was "Album Jacket Cover," which challenged them to focus and produce high-quality photos in less-than-ideal conditions. Majors were allowed to shop for designers clothes for the photo shoot and decided on a dark, yet youthful vampire concept, while minors were sent to a street market and designed a fresh concept inspired by Wonder Girls. The results of the photo shoot exposed the strengths and weaknesses of the girls, revealing the natural charms of some and the struggles of others.

The contestants' next mission is to be a group challenge between minor and major teams. The teams are divided into Major A, Major B, Minor A, and Minor B. 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.

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.

This episode continues to the loser's battle, Major A is renamed Minor A, and Minor A is renamed Minor B.

After completing Variety Camp, JYP gathers the girls together and announces that the mission will be member elections, where they will cast private votes on the Major and Minor line-ups. The girls are once again divided into four teams for their next mission, "Create Your Own Live Showcase." The teams will prepare a performance as well as be responsible for promoting the show.

The girls rush through the streets of Seoul promoting the concert and handing out colored balls (Major A - Red; Major B - Yellow; Minor A - Green; Minor B - Blue). Before the show starts, attendees will place the ball in the correct group's bin to show which team did the best job promoting the show. The team that gets most of their balls back will be safe in the Major line up. After the performances, audience members are given white balls to vote for the performance they liked the best out of all four on their way out. This vote will determine the other members of the Major team.

JYP announces that the girls' last mission will be to become a real girl group onstage. He divides them into two groups, JYP then gives the girls their new songs for the final mission's first round, explaining that teams were assigned songs that they would normally be bad at - the rhythmical "I think I'm Crazy" for Major and the vocally-oriented "Truth" for Minor. He then reveals "Do It Again", which both groups will be performing in the final round and serves as a representation of Twice's musical direction. While preparing for the final mission, Major and Minor team are visited and mentored by miss A's Fei and 2PM's Jun. K respectively. After the performances, the girls receive praises from JYP, who chooses Minor as having given the better performance for the round.

The girls prepare for the final showcase, where the Major and Minor teams will perform "Do It Again" back to back. The teams spend one last night together reminiscing on their journey throughout the show, laughing at each other's silly moments, and sharing their heartaches and hopes. The finalists are gathered on stage where the Major team turns in their necklaces. JYP then throws in a twist, announcing that Twice will be a nine-member group. Along with the current Major line up, he chooses one contestant from audience's opinion through online voting and one from the A&R Team and the Trainers' decision.