Kim Hyuna's father was the most famous hit man in Seoul, South Korea. Having killed over one hundred people and not getting caught once, he had a big reputation. But when he passes away because of natural causes, he leaves his biggest mission unfinished. His daughter Kim Hyuna is assigned to finish off the job. Her mission is to get close to the subject (victim), earn all his trust, and then BAM! eliminate/kill him. She is sent on this mission for unknown reasons. Reasons that she will not be told. But when, Hyuna is forced to take the job as a hit man, or hit woman, as her fathers replacement, she finds out her victim is none other than the oh-so-famous maknae Lee Taemin of SHINee. With no other choice, but to take the job, because it is the only way she can save her family from their doomed fate, she finds out that this job is harder than it seems. Will she succeed in killing Taemin or will she end up losing everything?