Three Halliwell sisters discover that they are descendants of a line of good female witches and are destined to fight against the forces of evil, using their combined power of witchcraft kno... Read allThree Halliwell sisters discover that they are descendants of a line of good female witches and are destined to fight against the forces of evil, using their combined power of witchcraft known as the "Power of Three".Three Halliwell sisters discover that they are descendants of a line of good female witches and are destined to fight against the forces of evil, using their combined power of witchcraft known as the "Power of Three".