Annie Walker is a CIA field operative who balances dangerous undercover assignments abroad with the political complexities of life at the agency's headquarters in Langley. As she navigates missions across the globe, she becomes entangled in a web of personal and professional secrets, including a complicated relationship with a blind tech operative named Auggie Anderson. The series follows her growing from a relatively inexperienced agent into a more seasoned operative willing to question the loyalties and motives of those around her.