A scene from "A Shop for Killers" / Courtesy of Disney+

Jeong Ji-an (Kim Hye-jun), who lost both of her parents as a child, grew up with her uncle. But when Ji-an is a 21-year-old college student, her uncle dies by suicide. He had always kept her at a distance, and she is so angry that he died suddenly without saying a word that she cannot even cry.

Then, immediately after the funeral, the truth about her uncle, Jeong Jin-man (Lee Dong-wook), begins to emerge.

Even his occupation was a lie. The agricultural hose shopping website he ran in a rural village was merely a front for "Murderhelp," an online weapons store for assassins.

As Ji-an struggles to believe that her uncle was an arms dealer, killers with old scores to settle with Jin-man begin surrounding her home, intent on eliminating her and taking over the store.