When a Thai girl overdoses on drugs and an investigation is launched, clues point to a man named Danilo, the very person Prosecutor Jana Persilius wants to eliminate. However, she must pursue him covertly to avoid exposing the secrets of her own traumatic childhood. Meanwhile, the police are focused on tracking down the elusive Swedish drug kingpin known as "The Old Man." No one has ever confronted this diabolical mastermind in person; he is like a shadow, yet he commands immense respect. Who is this drug lord? Persilius is desperate to uncover his identity, even as she secretly tracks Danilo, who has threatened to reveal her true identity. She knows she must kill him first, before he can expose her secrets, because if she fails, she will lose everything. As she prepares to fight for her life, Persilius discovers an even more dangerous and treacherous betrayal that inextricably links her to the entire sordid web of crime.