S1, E2: After a near-death experience, Mu Jin strikes a strange deal with a mysterious figure named Bo Sal. But in return, he begins to see terrifying ghosts with grudges. Haunted by the spirit of Min Uk, Mu Jin gets pushed to investigate the unsafe factory where Min Uk died. Gyeon Woo goes undercover as a new hire and meets Nimal, a migrant worker afraid to speak out, but as the truth surfaces, the team is exposed and forced into a desperate retreat.