Original title (KO): 좋거나 나쁜 동재 (Johgeona nappeun dongjae, Good or bad companion)
Seo Dong-jae (Lee Jun-hyuk), facing a grim future due to his tarnished reputation as a corrupt prosecutor, is assigned a new high profile case. This new assignment pushes him to navigate a perilous balance between his prosecutorial instincts and opportunistic inclinations.