Three months after their mother is killed by a mystical demonic force, sisters Mel and Maggie discover they have an older stepsister named Macy. When the sisters come together under one roof for the first time, they unexpectedly begin to exhibit new magical abilities. The eldest, Macy, gains the power of telekinesis. Middle sister Mel can stop time, while the youngest, Maggie, can hear people's thoughts. Harry Greenwood gathers the three sisters and shows them how to be witches like their mother.