When armed mercenaries storm the U.S. Embassy in London, Layla (Kendrick), a sharp and resourceful American diplomat, faces an impossible choice: protect the U.S. Ambassador (Simmons) or follow his orders to exfiltrate a high value asset being held at the embassy. As a larger conspiracy unfolds, Layla must rely on her instincts—and the reluctant help of her ex-fiancé, a British SAS soldier—in the tense hours before extraction.