After the mission for Round 3 is revealed, the 15 trainees get together in their teams to practice. They must pick a leader and choose a team name. The groups work together through practice and interim checks while getting closer. SEVENTEEN delivers a special mission to the trainees where there will be a "variety contest" to give them a chance to earn additional &BALLS. The trainees go outdoors to a lodge where they open up to each other and talk about what has been on their minds. They also receive surprise special messages from afar.

The trainees find out about the progress of the &RING and the mission for Round 4: the BTS mission and look over the songs at their dorm, which is shown for the first time. Days later, a surprise mission is announced and only the winning team will receive a benefit. Tomorrow X Together visits and the trainees have a meal together and chat. After the interim check, everyone hears a shocking announcement about the &BALLs they will receive. On the day of performances, BTS sends a special message.