Jjang-gu joins "Monster," a violent organization at his high school. As a rite of passage, he learns a lesson about being a man while following the course.

• Sidus
• Jung Woo
• Hwang Jung-eum
• Son Ho-jun
• Kwon Jai-hyun
• Kim Jung-ki
• Jeong Seong-hun
• Baek Gil-seong
• Yoo Jae-myung