Milan, 2030: Eight years ago, the independent global spy agency Citadel was destroyed by the powerful enemy syndicate, Manticore. Since then, Diana Cavalieri (Matilda De Angelis), an undercover Citadel agent, is alone, 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.