Susan Cooper is a 40-year-old, single, desk-bound CIA employee who assists her partner remotely, field agent Bradley Fine, on a mission. Fine accidentally kills arms dealer Tihomir Boyanov, failing to learn the location of a suitcase nuke from him.

Susan uncovers evidence that Rayna, Boyanov's daughter, has contacted terrorist middle man Sergio De Luca, so Fine infiltrates her home. She shoots him dead, while Susan watches helplessly online. She then reveals she knows the identities of the agency's top agents, including Rick Ford and Karen Walker. Susan, once a top trainee agent but now unknown, volunteers to track her. When her boss, Elaine Crocker, reluctantly agrees, the ultra macho Ford quits in disgust.