How do you start the quest the barbed heart in wizard 101?

To start the quest "The Barbed Heart" in Wizard101, you need to be in the world of Khrysalis and have completed the quest "The Heart of a Hero." After that, head to the location called "The Vale of the Lost," where you will find the quest giver, who will provide you with the details to begin your adventure. Make sure you’re prepared for the challenges ahead, as this quest involves battling various enemies.