Sickly Sweet

Someone has managed to put a dark enchantment on David, leaving him cruel and unhappy, and Mary Margaret and her daughter Emma don't know how to fix it. True Love's kiss won't even lift the enchantment.

However, Killian knows of the one person powerful enough to do this, and knows that they are the only one who can make things right. He knows it won't be easy, and has trouble convincing Emma and Mary Margaret of the horrors he knows this villain capable of. Will they rescue the cure for David and come out unscathed?