When M receives word that a known terrorist organization is planning to infiltrate and destroy a top-secret British Royal Navy aircraft carrier-based summit of world leaders, James Bond is returned to active duty in the Royal Navy. Promoted from Commander to Captain, Bond is expected to infiltrate the aircraft carrier HMS Invincible and identify potential sleeper agents.

As he struggles to complete his mission, a massive war game is being carried out between the American, British, and Soviet Navies. And when Bond gets caught up in a murder investigation the safety of the most powerful leaders on the planet hangs in the balance....