Soo Ji is determined to figure out the characteristics of her classmates and the mastermind behind the Pyramid Game. She also tries to join forces with other girls who seem vulnerable. She even asks her homeroom teacher for help, only to be disappointed. Meanwhile, the 14th Pyramid Game begins, and Ja Eun, who kept skipping school, shows up.

• JQ Lee
• Choi Soo-yi
• Choi Soo-i

• Shin Seul-ki
• Bona
• Jang Da-a