The Ancient Courtyard
Entering the Fallen Tower, the heroes find sinister magic at work. Whatever evil controls the valley is creating able-bodied Dragonborn soldiers directly from the egg, bred for combat. The hatchling has come to call the group family as it was they who first watched it emerge from the egg and helped it defeat dangerous aggressors in the upper floors of the towers.
The group then finds the buried remains the ancient courtyard of the flying citadel of Ustraternes. Upon entering it the heroes are beset by all manner of villany and are now in a fight for their lives.