5th Edition Fantasy: #10 The Castle In The Sky

Bold adventurers cross paths with an ancient castle, adrift in the winds above. They are heroes foretold by the architect and ruler of the palace, the ancient elven wizard Kaligby, who has been seeking them, across time and space, to aid in uncovering an ancient evil that has lead to centuries of warfare and death. What will they discover as they walk the history of the Castle in the Sky?