Every student in Sheffield Institute is getting their midterms back and everybody is just about happy with their grades, except Taranee. Cedric's disguise as a bookseller seems to have attracted Cornelia, Elyon, Irma, Taranee, and Hay Lin to the store to look for history books (and to ogle at Cedric). While in the bookstore, the W.I.T.C.H. girls inadvertently touch an inversion point and find themselves in the middle of a Labyrinth inside Phobos's castle. Will they be able to find their way back without powers and without help from their leader Will who is at home buried in school work? (thetvdb.com)