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.
In 1980s Beirut, Mason Skiles is a former U.S. diplomat who is called back into service to save a colleague from the group that is possibly responsible for his own family's death. Meanwhile, a CIA field agent who is working under cover at the American embassy is tasked with keeping Mason alive and ensuring that the mission is a success.
When soldier Robin happens upon the dying Robert of Loxley, he promises to return the man's sword to his family in Nottingham. There, he assumes Robert's identity; romances his widow, Marion; and draws the ire of the town's sheriff and King John's henchman, Godfrey.