In 2030 Milan, an undercover agent for the global spy agency Citadel is trapped behind enemy lines as a mole in the powerful enemy syndicate Manticore.

After waking up in a morgue, an orphaned teen discovers she now possesses superpowers as the chosen Halo-Bearer for a secret sect of demon-hunting nuns.

Prima ballerina, Dominika Egorova faces a bleak and uncertain future after she suffers an injury that ends her career. She soon turns to Sparrow School, a secret intelligence service that trains exceptional young people to use their minds and bodies as weapons. Dominika emerges as the most dangerous Sparrow after completing the sadistic training process. As she comes to terms with her new abilities, she meets a CIA agent who tries to convince her that he is the only person she can trust.

An assassin hides out in Italy for one last assignment.