Byzantium stretches a weakening grip across Eastern Europe, trying in vain to hold onto all that has made it an empire. Tyrian purple, the unique dye that denotes its power, is held under close guard by the imperial house.

However a Jewish merchant from Venice has sourced an illegal supply and Tobias the dwarf minstrel and his twin brother, Tomas, begin a dangerous journey to retrieve the purple and deliver it into the merchant's eager hands.

But is this supply as secret as they had hoped?

Trade is cut throat, men are expendable, money is power and Constantinople...