Haunted by her past and the dark deeds during her espionage tenure for the KGB, a former Russian operative now fighting on the side of justice is pursued by a dangerous enemy who is hell-bent on bringing her back into the fold or ensuring her demise. Faced with the unstoppable force of the Taskmaster, a new breed of assassin capable of mimicking her every move, she must confront her history and the broken relationships left in the wake of her transformation into a superspy. On a quest for atonement, the journey takes her back to the roots of where it all began, revealing a clandestine organization that trains girls to become lethal operatives. In pursuit of liberation from those who puppeteer their fates, she seeks to dismantle the oppressive system that created her.

Reconnecting with her estranged "sister," a product of the same grim program, they join forces, their banter thinly veiling a complex, shared history and emotional wounds. Together, they track down their ersatz "parents," two former spies who once posed as a family with them as part of a deep-cover operation. Wrestling with their pseudo-familial ties and a past steeped in manipulation and treachery, they embark on a perilous mission to expose the grim organization and seek to disrupt its operations, facing moral ambiguities and the challenge of reconciling who they were with who they've chosen to be.