David Beck goes to the lake resort with his wife Elizabeth. During the night they are attacked by unknown assailants - David is heavily wounded while his wife dies.
Symbologist Robert Langdon, expert on symbols, tries to help French police with mysterious death of Louvre curator Jacques Sauniere.
One of the scientists working in CERN is found dead and branded with ambigram of the word "Illuminati". American symbologist Robert Langdon starts to unveil the secret society standing behind the murder.
When young woman is found dead on the sleeping-car in train from Maresille the police starts the investigation.