Don't Move, Spy!

Heo Su-Ran, a highly motivated but unsuccessful journalist, is told by her employer that she will only be working until the end of the month, and decides to get a scoop to save her job. To get the scoop, Su-Ran goes undercover with a top criminal organisation known as Black Snake, but is quickly discovered by Blue. She begs for her life, but Blue says he doesn't care and holds her at gunpoint...

(Source: KakaoPage, translated)