In-Sung has prepared for the examination to become a police officer for 4 years. He has failed the exam 8 times, but he still has a positive personality. He then applies for the high pay part-time job which is titled "Experiment Full of Life."
Kang Ki-young
Jang Hui-ryeong
Yoon Shi-yoon
Cho Soo-hyang
Kim Min-soo
Hwang Young-hee