Yoo Ahyoung was trying to find out about a 2 year-old case that the police still had not been solved. A case that involved her friend's death. Detective Jeon, the senior detective in charge for the case, was so against her since the first day the newbie reporter barged into the precinct and interrogated him non-stop. 

Yoo Ah Young. 

24 y.o

Nickname : Fearless Miss Yoo

A very young, fresh and passionate rookie reporter who always had interest in criminal cases.

Jeon Jungkook.

31 y.o

Nickname : Detective Jeon-ius

A senior detective at 10th precinct.

Living 7 years of his life as the most successful detective in that precinct.