Kandrakar has finally elected its newest Oracle - the sly and mysterious Endarno! The W.I.T.C.H. girls don't feel right about it, especially when Endarno keeps expressing his dislike for the guardians, and is secretly planning to replace them! Meanwhile, a crystal butterfly visits Heatherfield drops by the Hale residence and magically erases all memories of Cornelia from her family and friends! A dark secret is revealed that could mean trouble for the W.I.T.C.H. girls, but can they stop the spell from wiping Cornelia's existence?