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World-renowned expert on religious symbolism Robert Langdon is urgently summoned to Switzerland to investigate a mysterious mark burned on the chest of a brutally murdered physicist.

He makes a startling discovery: it is the work of an old enemy of the Church, the secret Illuminati organisation. In addition, a powerful bomb has been planted in the Vatican, which must be found by Landon, along with a charming woman scientist, Vittoria Vetra.

A crazy adventure awaits them: following the trail of a ruthless killer, collecting corpses, climbing cathedrals, going down into the dungeons to finally find the Illuminati lair and save the Holy See.