The cure became a seed of conflict, splitting the students into two teams: Jeong Yeseul and her followers, and Kim Junho and his followers.

Kim Junho's group leaves Dormitory A to infiltrate the lab, presumably to take revenge on Dr. Queen, while only Jeong Yeseul's group remains in the dormitory.

Back in the summer when the internal division began, Kim Junho, fed up with the friction between Jeong Yeseul and the other students, finally left the dormitory to join forces with Ma Yonggyu's group.

Nam Dongjin, who could only watch Kim Junho, told him to come back if things got hard, but he couldn't stop him from leaving.

And so, four months passed, and the students welcomed winter. Still unable to escape the school.