Diana Cavalieri (Matilda De Angelis), an undercover Citadel agent, is trapped behind enemy lines as a mole in Manticore. When she finally sees a way out and the chance to disappear forever, the only way to do so is trusting the most unexpected ally, Edo Zani (Lorenzo Cervasio), the heir of Manticore Italy and son of the head of the Italian organization, Ettore Zani (Maurizio Lombardi), who’s vying for leadership against the other European families.

The first season of Citadel, starring Richard Madden and Priyanka Chopra Jonas alongside Stanley Tucci and Lesley Manville, premiered in 2023. Executive produced by the Russo Brothers’ AGBO, Citadel and its subsequent action-espionage Original Series traverse the globe, evolving the story of spy agency Citadel and its powerful enemy syndicate, Manticore. The Italian Original, Citadel: Diana, is the second series to debut from the world of Citadel and will be followed by India’s series, Citadel: Honey Bunny starring Varun Dhawan and Samantha Ruth Prabhu. Season Two of Citadel, starring Richard Madden and Priyanka Chopra Jonas, will begin production this year, with Joe Russo serving as director.