Erik is convinced that he has a heart of stone. That's why it doesn't bother him that his parents don't have time for him and that he doesn't have any real friends. When his family moves into a mansion that they inherited from Aunt Brunhilda, he discovers that another family lives there – Maria and her father, whom Erik's parents want to throw out. When the family receives an eviction notice, Maria puts her secret plan into action to bring back her missing mother to save them. Together they embark on a fantastic journey into the world between the worlds, and Erik learns how hard it is to carry a heart of stone.
Erik is convinced that he has a heart of stone. That's why it doesn't bother him that his parents don't have time for him and that he doesn't have any real friends. When his family moves into a mansion that they inherited from Aunt Brunhilda, he discovers that another family lives there – Maria and her father, whom Erik's parents want to throw out. When the family receives an eviction notice, Maria puts her secret plan into action to bring back her missing mother to save them. Together they embark on a fantastic journey into the world between the worlds, and Erik learns how hard it is to carry a heart of stone.