Something Wicca This Way Goes...?

With the Book of Shadows finally in his possession, Zankou plans to open the Spiritual Nexus and take in the power of the Shadow. To divert Zankou's attention away from the Nexus, Piper, Phoebe and Paige successfully goad him into coming after them instead. The sisters come to the realization that the only way to stop Zankou may be to sacrifice themselves, but they manage to survive and escape with Leo in an attempt to get their lives back, a prelude to the eighth and final season.