Fuelled by an unyielding determination, Detective Oh Kyung-tae relentlessly pursues the truth behind a chilling kidnapping case. Meanwhile, his wife, journalism student Baek Yu-ra, is unwillingly thrust into the heart of the criminal underworld, becoming a pawn in a dangerous investigation. What will this mean for the newlyweds, who are only just beginning to navigate married life?
Join them on a harrowing descent into Seoul's dark underbelly, where the boundaries of morality blur and the price of uncovering the truth could be more costly than they ever imagined.