In a gray and hyper-controlled Milan, Diana and Luca are sent on a mission in Lugano to spy on a secret meeting between Manticore France and Manticore Germany; Edo Zani receives a marriage proposal from the head of Manticore France, Cecile.
Diana and Edo team up, but Edo discovers that the French half of the weapon that Diana stole is a fake; Cecile tries to fool everyone and seize sole control of the weapon.
Ettore assigns Edo the mission of capturing Weber, who has been spotted near Palermo; Edo agrees, on condition, he can take Diana with him; Diana and Edo's mission leads them through a chase through the ghost town of Gibellina.
After discovering that his son schemed behind his back, Ettore drives Edo out of Manticore and has Diana locked up in the cells; Edo, who designs Manticore Europe's security systems, manages to get into the cells and talk to Diana.
Edo leads a group of agents in an attack on the Manticore France's headquarters in Paris; just as Diana is about to get her hands on the weapon, she is forced to decide which side she is on.
As Diana ponders her choice, Edo works on a powerful new weapon; Ettore tries to get closer to his son, playing one last, surprise card; in a flashback, the Zanis mourn Enrico while Diana realizes she's the last living Citadel agent.
Matilda De Angelis
Diana Cavalieri
Lorenzo Cervasio
Edo Zani
Maurizio Lombardi
Ettore Zani
Thekla Reuten
Julia Zani
Giordana Faggiano
Sara