The Trunk in the Attic

A boy named Raymond, who lost his father in the war lives with his mother and two older sisters in an old two story house. He recently lost his best friend due to his friend father's job reassignment. Now he is all alone and he hates it. On an especially bad day, he discovers a ceiling door to an attic and climbs up on it. In the attic, he discovers a trunk that he later finds out has magical powers and he wants to use them to get his father back.

What kind of magical powers are in this box? Will Raymond get his father back along the journey?