When a little girl from the human world becomes lost in the magical Realm, Jessie's only hope of finding her is the want of a brilliant but reclusive magician, and if she succeeds she must still face Mrs. Tweedie, who is up to no good.
During her most recent visit to the Fairy Realm, Jessie inadvertently allows a baby fairy to be captured by water sprites who want to hold the child captive until their missing moonstone is returned.