jung tae suk is detective in seoul police station, he is higher rank and people respect for him, even tho his personality spontaneous, do whatever he want and have connections include gangsters. he has solved many cases

one day there is a case that quite hard to solve, its serial killer and the victims was young girls around 18-20 years old, the patterns and motifs are difficult

he in the room, at his desk, he was contemplating and thinking, frustrated that he had no ideas. this room contain 6 people, The detectives and officers around him didn't dare to talk to him, afraid of being scolded. Instead they were each working on their own cases and things.

one of young junior detective come to his desk and give some files, he worked pair with tae suk in this case

"sir, uh i found something on cctv"

he shown cctv reveal girl, and its you