The discovery that they are descendants of a long line of witches find three sisters battling demons and warlocks - and occasionally each other. When the beautiful Halliwell sisters inherit a house from their grandmother and discover a secret "Book of Shadows," they learn that they each have a unique power. The strong-willed Prue (Shannen Doherty) can move objects, reserved Piper (Holly Marie Combs) is able to freeze time, and the uninhibited Phoebe (Alyssa Milano) sees the future. Individually, each is strong, but it is only by putting aside their differences and banding together as the "Power of Three" that they will be able to protect the innocent and vanquish evil. Each exciting episode in this richly layered series is a supernatural adventure brewing with suspense and humour.