"The Dark Dimension" is the third issue in the Twelve Portals saga, and the third overall issue of W.I.T.C.H.
After a scary encounter with Professor Rudolph, the W.I.T.C.H. girls realize that things are not always what they seem. During their first adventure in Meridian, the W.I.T.C.H. girls are attacked by Phobos and Elyon's minions and Taranee gets captured.