Elizabeth Welch is a curious and imaginative girl but she is completely unprepared for the adventure that awaits her when she relocates to her grandfather's mansion in the remote Illinois countryside. In the basement of the home, Elizabeth discovers four mysterious doors, each of which is guarded by a unique and elaborately decorated lock. Her grandfather, a reclusive former stage magician, provides her with an unusual key and a set of bizarre instructions to gain entry into what awaits behind the first door. To discover its hidden secrets and purpose, Elizabeth must cast aside her fear and trepidation, and be brave enough to venture into the strange and wonderful world known as The Realm. In The Realm, Elizabeth will discover secrets about her grandfather and the special inhabitants of this hidden land. And as the great mysteries begin to unfold she will uncover a grand plot to enslave two of the oldest living beings in the universe by a sinister agency known as The Illumini. Together with her grandfather and his friends, Elizabeth vows to fight the clandestine organization and provide protection and freedom to the sentient beings. It is a fight they must in to secure the future.