Throughout the series, Phép thuật told the story of the three Halliwell sisters (at first Prue, Piper and Phoebe, and then later Piper, Phoebe and Paige). Upon reuniting through circumstance in their ancestral mansion in San Francisco, the three discover that they are in fact the world's most powerful good witches, known in the magical world as the Phép thuật Ones. Each sister possesses a unique magical power along with the ability to cast spells and brew magical potions. The Phép thuật Ones are charged with using the mystical Power of Three to defend the innocents (or mortals) of the world from demons,...