A Phoenix named Bianca arrives from the future, with plans to forcefully escort Chris back to the future that he came from. It is revealed that Chris and Bianca are engaged, and that Chris was sent back to prevent Wyatt from turning evil. The Charmed Ones are powerless to stop his departure, but do slip him a parting gift. Also, Piper tells Phoebe and Paige to move in with their boyfriends, jeopardizing the Power Of Three.
The three Halliwell sisters have accepted their destiny of protecting the innocent and vanquishing evil doers, even though that is generally not on the agenda of every twenty-something on the fast track to discovering what life's all about.
Prue, the oldest, is driven to succeed and dislikes the free-spirited antics of the youngest sister Phoebe. Piper, the earthy middle sister, mediates between her siblings. Prue has the power to move objects, Piper to freeze time and Phoebe to see the future. In the fourth season, Prue died and was replaced by Paige, a half sister, who has the power to move objects and orb (teleport).
The sisters must band together to protect themselves, and the world, from the dark, demonic forces that seek to destroy them.