Harry Tasker leads a double life: to his wife Helen and his daughter Dana, he is a boring computer salesman often away on business trips, while in actuality he is a secret agent for a U.S. intelligence agency named Omega Sector whose motto is "The Last Line of Defense". Harry and fellow Agents Albert "Gib" Gibson and Faisil infiltrate a party in Switzerland, where they learn of the existence of a terrorist group known as the "Crimson Jihad", led by Salim Abu Aziz. Harry suspects that American antiques dealer Juno Skinner has ties to Aziz, and visits her undercover as a corporate art consultant. Suspicious, Aziz and his men attempt to kill him, but Harry fights them off and loses Aziz in a pursuit; as a result, he misses the birthday party that his wife and daughter have arranged for him.