In ancient Rome, under the guise of the Emerald College, there was a secret society whose members carefully guarded the secret knowledge of the legendary Hermes Trismegistus, encrypting it in four copies of the Emerald Tablet. The testament of the ancient teacher of wisdom could only be read by someone who owned a priceless amulet key, but it disappeared during the eruption of Vesuvius. Nowadays, on an excursion to Pompeii, Vera mistakenly receives an artifact of great antiquity and, feeling an invisible connection with it, tries to unravel the great mystery of the universe.