m receives word that a terrorist organisation known as bast (brotherhood of anarchy and secret terrorism) is planning to infiltrate and destroy a top-secret royal navy aircraft carrier-based summit, the "stewards' meeting", scheduled a year hence, comprising american president george h. w. bush, british prime minister margaret thatcher and soviet premier mikhail gorbachev. james bond is returned to active duty in the royal navy and promoted from commander to captain, in order to infiltrate the aircraft carrier hms "invincible" and identify potential sleeper agents.