Min-tae, a former infamous gangster now living a quiet, retired life, stumbles upon the gruesome murder of his younger brother, Seok-tae. The main suspect is Seok-tae’s missing wife, Moon-young. Min-tae discovers a suspicious final phone conversation between her and an enigmatic writer, igniting a relentless quest for the truth. This pursuit unfolds amidst the backdrop of his potentially treacherous old criminal associates and the police, who are both on his trail.