In order to find out if a future world ruled by the Avatars will indeed be a utopia as they claim it will, Piper (Holly Marie Combs) trades powers with Phoebe (Alyssa Milano). Unfortunately, the demon Zankou (Oded Fehr) interrupts the transference process -- and as a result, the girls' powers are dispersed to a wide variety of mortal "innocents," who wreak considerable havoc with their ill-gotten magic skills. Elsewhere, Brody's (Kerr Smith) true intentions are revealed in a violent fashion, prompting Paige (Rose McGowan) to glean "firsthand" information regarding Brody's tortured past. ~ Hal Erickson, Rovi