S01E04: Episode 4
Ha-joon, Se-ah and Bangwool investigate Girigo's origins, chasing an online friend of Hyeong-wook's. They soon discover a house that may hold clues.
Previous Episode 
Jeon So-young
Yoo Se-ah
Baek Sun-ho
Kim Gun-woo
Kang Mi-na
Im Na-ri
Hyun Woo-seok
Kang Ha-joon
Lee Hyo-je
Choi Hyeong-wook
Roh Jae-won
Bang-wool
Jeon So-nee
Kang Ha-young / Haetsal
