Now, Han Bong-Gu (Uhm Ki-Joon) becomes the temporary 2nd grade 3 class homeroom teacher. He is mysterious person. The teachers at the school know about him well, but he is not on the teaching staff list. Han Bong-Gu leads them into an illusory world.

• Nightmare Teacher
• Hyun Moon Sub
• Seung Do Baek
• Da-Ye Kim
• Ji-An Kim