"Shadows of Tomorrow" is the 6th issue in the Arc 2: Nerissa's Revenge Saga, and the number 21 overall issue of W.I.T.C.H.
The sinister Nerissa tries to enter the gates of Kandrakar! Without their powers, the girls are no match for her. But they won’t give up! With the help of Eric’s grandpa, they discover the Star of Cassidy and get their powers back.