The Pariser Platz Irregulars, a new independent secret service is formed. However, their newest asset, Nastya Pavlova, an intelligence prodigy, is being held back from entering the field. Marley's and Trubel's assignment is to get Nastya ready. To do this Nastya needs to confront the loss of her brother Erik in a Kayaking accident. In the process of accomplishing this, they unearth a secret message left in the flower beds that surround Nastya's ski-chalet home. It is a message, that when deciphered will reveal a history of war, of greed, of betrayal and stolen art treasures, but Nastya is not the only one with things to resolve.

Marley has his own ghosts to deal with. Following him from his tours in Afghanistan is the murder of a woman named Kahidja which refuses to leave him. Marley, finds out f that Kahidja also had a daughter named Ameera. He discovers that she is being hunted by her father, the infamous terrorist Abdul Ibrahim Al-Nasser.

Where history repeats itself, the past and present come crashing together in a fatal showdown at Nastya's family's chalet.