When ballerina Dominika suffers a career-ending injury, she and her mother are facing a bleak and uncertain future. That is why she finds herself manipulated into becoming the newest recruit for Sparrow School, a secret intelligence service that trains exceptional young people like her to use their bodies and minds as weapons. After enduring the perverse and sadistic training process, she emerges as the most dangerous Sparrow the program has ever produced. Dominika must now reconcile the person she was with the power she now commands, with her own life and everyone she cares about at risk, including an American CIA agent who tries to convince her he is the only person she can trust.