Trainees perform their last group performances and vocal/dance solos before the final ranking is announced.  INTO1 debuts with their first song. 

Trainees watch videos from their families and receive the results of the third rankings, leaving only class A and B to fight for the final 11 spots. 

Trainees perform original songs with the help of some special guest performers.  Gong Jun joins the mentors as a special guest to support the trainees. 

Trainee's play games and sports in their last day together before the elimination of 22 more contestants.  

Trainees participate in the second of the stage performance rounds.  Two Super MVPs are named for a special honor. 

The first round of eliminations take place, sending 35 trainees home.  

The center is chosen for the theme song performance.  Trainees receive the option to arrange a remix of their theme song and make a final performance before the next round of the competition. 

All of the teams take part in their first stage performance with a live audience voting for the MVPs of the groups. 

After a dramatic conclusion to the first rankings, trainees choose their dorm rooms and their very first performance assignment. 

Following the injury of international trainee, Santa, the rankings continue and Class A is reimagined. 

Trainees and mentors meet each other for the first time and learn the new rules and procedure for the upcoming ranking performances.