Z is for Zenith.After Cedric swallowed Phobos, thus gaining the power of Nerissa's seal, he decides with Miranda to seek revenge on everybody. Cedric attacks Heatherfield and orders Miranda to destroy the Aurameres, granting her enough power to do so. W.I.T.C.H. and Matt leave for Earth. Regents of Earth enchant Heatherfield to prevent anyone from seeing Cedric or W.I.T.C.H. during the fight. C.H.Y.K.N., Elyon and Yan Lin's Altermere intervene and help W.I.T.C.H. to tap into their true powers. The girls each reach the zenith of their power, but lose their humanity in turn. With Cedric defeated, C.H.Y.K.N., Elyon and Yan Lin's Altermere escape, except Nerissa who becomes trapped in her own dream. Through the efforts of their friends, W.I.T.C.H. are able to get their humanity brought back. Elyon regains control of Meridian and returns to her throne. After the events, W.I.T.C.H. meets the computer teacher Pr. Raphael Sylla.