Lisa isn't a woman of many words. Until one fateful day where she encounters a girl with a guitar on an elevator

Where Kim Jennie and Kim Jisoo were fated to meet at a very young ages, bounded by a fact that Jennie's father married to Jisoo's mother, five years after Jennie's mother passed away, which a great loss affected Jennie's emotionally and mentally, that changed Jennie from a once a sweet girl to a cold and spoiled kid.

  With the ever-growing number of deviants running rampant across Seoul, Jennie finds herself in a strange partnership with JISOO— an android designed to hunt them down.