Seo-rim, drowning in debt, plans to kill a homeless girl, Sum-e, for identity theft. However, Sum-e unexpectedly kills Seo-rim's boyfriend and disappears. Now a suspect and facing blackmail, Seo-rim must confront her past and a shocking truth.

The secret society of contract killers falls into chaos, unleashing a new breed of assassins. With old rules in ruins, who dares claim the shadows?

Six finalists for a global IT job are pushed into a tense team debate where only one can win, exposing their true selves under pressure. Among them is Jeon Yo-han, a brilliant but emotionally detached engineer who relies solely on logic.