Publisher's blurb:
In ancient days, a great emperor held a magnificent hoard of treasure, the wealth of his empire, in a grand vault. To protect it, four great keys were made, each a valuable artefact of its own merits. The hoard could only be accessed if all four keys were used together, and so each was secured in a smaller vault of its own, spread across the empire. Each was under the custody of a great baron, guardians now long lost to the mists of time. Once a year the keys would be assembled to review the imperial hoard and add the annual profit to it. That hoard is long lost, but the vault that housed the Emerald Key has been found! The secluded Vault is now deep within a dark forest, home to malevolent fey creatures, and enchanted woodland. A great tree now stands over the Vault and only the bravest adventurers may recover this lost treasure.
This adventure is designed for four characters of level 2-4.