nana is a renowned serial killer in seoul, korea. nobody has caught them, they don't even know who it could possibly be. that was until detective in training lee jeno gives the case a try.
ʏᴏᴜ ᴄᴏᴜʟᴅ ᴄᴀʟʟ ʜɪᴍ ɴᴇᴇᴅʏ, ʜᴇ ᴀᴄᴄᴇᴘᴛs ᴛʜᴀᴛ ᴀᴅᴊᴇᴄᴛɪᴠᴇ. ʙᴜᴛ ᴇᴠᴇɴ ᴛʜᴇɴ ᴛʜᴇʏ ᴡᴏᴜʟᴅɴ'ᴛ ʀᴇᴄɪᴘʀᴏᴄᴀᴛᴇ ʜɪs ʜᴜɢs. ᴡʜᴀᴛ ᴡᴀs ʜᴇ ᴅᴏɪɴɢ ᴡʀᴏɴɢ? ᴏʀ ᴡᴀs ʜᴇ ᴅᴏɪɴɢ ᴀɴʏᴛʜɪɴɢ ᴡʀᴏɴɢ ᴀᴛ ᴀʟʟ? ᴀʟʟ ᴅᴏɴɢʜʏᴜᴄᴋ ᴡᴀɴᴛᴇᴅ ᴡᴀs sᴏᴍᴇ ᴀᴛᴛᴇɴᴛɪᴏɴ ᴀɴᴅ ᴀғғᴇᴄᴛɪᴏɴ. ᴍᴏɴᴛʜs (ᴏʀ ᴇᴠᴇɴ ʏᴇᴀʀs) ᴏғ ɴᴏᴛ ʜᴀᴠɪɴɢ ɪᴛ ʀᴇᴛᴜʀɴᴇᴅ, ᴅᴏɴɢʜʏᴜᴄᴋ ᴄᴏɴsᴜʟᴛs ᴊᴀᴇᴍɪɴ ᴀʙᴏᴜᴛ ɪᴛ, ᴡʜᴏ ᴏɴʟ...
