Charmed Seasons

Charmed is the story of the three Halliwell sisters, Prue, Piper and Phoebe, discovering that they are the world's most powerful good witches, The Charmed Ones; each gifted with innate magical powers they must collectively use to defend the "innocents" of San Francisco from demons, warlocks and other evil beings. During their fight against the forces of evil, eldest sister Prue is killed, breaking the united Power of Three. However, the Charmed triple-destiny is restored with the introduction of a long-lost fourth half-sister, Paige Matthews, who is half-witch and half-whitelighter. During Seasons One to Four, the sisters' combined destiny was to vanquish the Source of All Evil, the ruler of the Underworld, and his demonic minions. Upon fulfilling their primary destiny, the Charmed Ones engaged in the Ultimate Battle; and ushered in the next generation of good witches. The Charmed Ones were also the guardians of the Nexus and in order to vanquish the demon Zankou they had to destroy the Nexus where Zankou had taken refuge. On top of their supernatural lives, the four sisters must also contend with serious issues in the real world (such as relationships, careers, marriage, childbirth, illness and death), as well as preventing the exposure of magic, the subject of several police investigations throughout the series