 Leo tells a desperate Piper he had to disappear as the Powers That Be have ordered them separated. Cole cleverly tricks Phoebe, playing into their budding romance and her favorite children s book; when Phoebe brings home 7-year old Kate, who s terrified of trolls which have seized power in a fairy kingdoms of elfs, Prue and Phoebe revert temporarily to little girls which let Cole in, so his demonic appearance, Balthazor, can try to steal the Book of Shadows. After only the power of three allowed the sisters to defeat the trolls, Piper finally resigns herself to giving up Leo to keep saving innocents, but then he reappears with a message...