Under the gorgeous whirlpool of the Venetian mask carnival, Lorenzo de' Medici (pseudonym Lorenzo Valenti), a young codebreaker of the Medici family, accidentally deciphered the terrifying astrological summoning array from the complex patterns of the noble mask. An ancient secret ritual is brewing to use the canal water system to summon the Deep Diving Familia. Lorenzo, who was tired of walking alone, joined forces with the printing shop apprentice Benedetto and the mysterious painter Eleonora to turn movable type printing into a weapon against the abyss. On a flooded night in St. Mark's Square, they used mirrors and moonlight as swords to smash the dark altar. This was not only a victory for knowledge, but also pushed the Venetian Parliament to pass the epoch-making "Deep Sea Trade Embargo Act." On the stage where art and conspiracy intertwined, it played the prelude of rational resistance to the abyss.