In Sang decides to take a job as a drug testing volunteer for a pharmaceutical company, but he suffers an unexpected side effect from the drug that grants him superhuman intelligence and strength.
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Kang Ki-young
Jo Ji-seob
Yoon Shi-Yoon
So In-sung
Yoon Shi-Yoon
So In-Sung
Jo Soo-Hyang
Wang So-ra
Hee-Ryung Jang
Kim Tae-yi
Do-im Woo
Song Ae-gyo
Min-su Kim
Kong Moo
Ji-Eun Kim
Nurse
Dong-won Seo
Yoo Jeong-joon
Kim Seul-gi
Korean street food girl
Hwang Young-Hee
In-seong's mother
Kim Ji-Eun
Student
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