Sir Lancelot, Where Are You? (Dragon Slayers' Academy Series #6)

The evil witch Morgana le Fay has put a terrible curse on Sir Lancelot, and it's up to Wiglaf and his DSA buddies to find and save him. But they're just dragon-slayers-in-training. Can they really outsmart the trolls, witches, and other villains that stand in their way?