The Rhythm Section

Three years prior to the events of the film, Stephanie's family died in a catastrophic plane crash. This incident plunged her into a world of devastation and despair, leading her to struggle with addiction and make drastic life choices.

Following the death of her family, Stephanie finds herself deep in addiction and working as a sex worker in London. She becomes lost in this new lifestyle, which is a shadow of her former self, highlighting her emotional turmoil.

Journalist Keith Proctor approaches Stephanie with a groundbreaking theory that her family's plane crash was the result of a terrorist act rather than an accident. This revelation ignites a spark of hope and determination in Stephanie to uncover the truth.

Desperate to escape her dark life, Stephanie moves in with Proctor. Here, she immerses herself in his investigation, which opens doors to new possibilities and a chance for revenge against those responsible for her family's death.

Stephanie discovers that Reza, a university student, is allegedly behind the bomb that caused the crash. Driven by anger, she confronts him with a gun, but undermines her resolve when he mocks her, leaving her feeling humiliated and empty.

Upon returning to Proctor's apartment, Stephanie is horrified to find him brutally murdered. As she sifts through his notes, she learns about a secret informant, Iain Boyd, who holds key information about the conspiracy surrounding her family's death.

Determined to avenge her family, Stephanie seeks out Iain Boyd in secluded Scotland. She makes it clear that she is willing to risk everything to achieve her goal of revenge, impressing Boyd with her tenacity.

Boyd agrees to train Stephanie, equipping her with the skills she needs to track down Reza. As they delve deeper into the investigation, Stephanie learns about the larger terrorist plot involving a shadowy figure known only as U-17.

Stephanie learns that U-17 orchestrated the bomb incident to eliminate Abdul Kaif, a liberal Muslim reformer. She discovers that Kaif's father financed Proctor's investigation, further intertwining her quest with those affected by the attack.

After months of rigorous training, Stephanie adopts the identity of Petra Reuter, an assassin whose body was never recovered. This transformation marks a turning point in her journey as she prepares to face those responsible for her family’s death.

Under her new guise, Petra travels to Madrid to seek information from Marc Serra, an ex-CIA agent. Initially, he declines to assist her, but with Alia's financial backing, she secures his help in connecting to U-17.

With renewed purpose, Stephanie orchestrates Reza's death in a bus bombing. This pivotal act of vengeance is deeply satisfying for her, but it also raises the stakes in her quest for justice.

Stephanie realizes that Marc Serra is in fact U-17, having played a role in numerous killings linked to the terrorist plot. In a tense confrontation, she ultimately ends his life with a syringe, forever altering her path.

Boyd tracks down Stephanie in London, revealing that he faces serious consequences with MI6 if he does not eliminate her true identity, Petra. This revelation sets off a moral dilemma for Stephanie, questioning her choices and life.

In a crucial moment, Stephanie decides to vanish rather than confront Boyd. This choice symbolizes her desire for a newfound peace after a tumultuous journey, as she seeks to break free from her past.