The keeper of the golden key

Once, deep inside an old forest, in an old, enchanted cottage, there lived a powerful witcher named Ivan and his young son, Yanny.
Yanny was the guardian of the forest and its wildlife, and the humans living around it. Every night before sunset, he walked through the woods caring for the creatures. If an animal was wounded, he would take it home for his father to heal.
One night, returning from his walk, he heard a rumbling noise and the clatter of falling objects coming from their home.