In the very distant future, technology has evolved into the unreal. Crime floods the city of the Seoul, while the streets are controlled by violent gangs. The Police department begins using androids in an attempt to deter crimes comitted. Moonbyul is a cop who doesn't like the use of these so-called machines. But as all cops are now required to work with a robot, Moonbyul must overcome her aversion and get accustomed to her new "partner" an android named S.L.R.

Anh Hye-Jin, Hwasa, is deadly assassin who is always precise and elegant in her execution. She does what she does best and revels in her killing. Living on her own she feels she's missing something but her life changes when she meets a girl named Jung Wheein.

Moonbyul is raised by the mafia and grows up to become a cold-blooded assassin. Moonbyul makes a terrible mistake on mission and is swamped by feelings of regret, guilt and shame, Moonbyul no longer wants to be a killer, but her boss, Jessica Jung, gives her one last mission. So she finds herself in Busan, the land of in which her mother abandoned her, on the trail of her last target. But in bitter irony, that target is Kim Yongsun.

"Life fails to be perfect but it always never fails to be beautiful, love however begins in strange ways, it brings things you may never want to see but only when people realize what it is can than truely feel"

Love is all about the people you meet because at the end of the day, the basic thing that we all desire is to belong.