This is a fictional story of a f ifteen-year-old Cassie Smith who lives a fine and comfortable life in the picturesque city of Los Angeles, California with her spunky younger sister Katie and reclusive younger sibling Avery. The story evolves through adventure and fictional magic worlds when Avery finds herself plummeting through a mysterious portal that has bizarrely appeared behind the family' s pantry door. Cassie and Katie, not knowing what else to do, follow in after her. There, the twosome find they have been magically transported to a new world known as the Magic Realm , but where has Avery disappeared to? They still cannot locate her there! Along the sisters' journey to reunite with Avery in this fairytale world , Cassie and Katie find themselves with many new friends but must also navigate a series of perilous, death-defying adventures , as well as encountering a plot to take over the Magic Realm . This will jeopardize the safety of not only them and their friends, but also the entirety of the dimension itself.