The 112 year old mystery behind the disappearance of a young girl named Alma is about to be lost forever with the closing of the local library, which used to be her home. With only one chance left to find the book that holds the secrets to her disappearance, Cassie and Kevin attend the library's closing determined to locate Alma's hidden journal. The siblings find themselves caught up in mystical adventures through time in search of solving Alma's fate.