 After an earthquake, the Halliwell sisters call the gasman to check the smell of gas in the basement. The man is possessed by an evil force, and later Phoebe, who is afraid of the Boogieman, is also possessed. Prue and Piper are expelled from their house and they find that the place is a spiritual nexus, equidistant from the five elements: earth, water, fire, wood and metal. Now evil is living in the house and the two sisters have to fight to rescue Phoebe from the dark side and destroy evil and bring the good and light back to the place.