The Ghost, a legendary figure who has gone by so many aliases that his real identity is a mystery, has his eye on super-agent Sydney Bristow. The mysterious man is the creator of a hallucinogen that is both a blessing to psychiatry and a powerful weapon that can ignite mass hysteria. When the mad scientist is double-crossed by one of his own minions, Sydney must accompany him to his clinic in Switzerland to help him learn which of his proteges stole the drug and sold it to a chemical-weapons dealer in Mexico City. This plan does not sit well with Sydney's father. Jack Bristow shares a past with The Ghost...In fact, he thought he killed the man in a Vietnamese jungle years ago. Now Jack must discover if his mind is playing tricks on him or if their wartime encounter was just another one of The Ghost's experiments...