Synopsis by Hal Erickson
Paula Cole is this week's musical guest star at P3, the club owned by "Charmed One" Piper Halliwell (Holly Marie Combs). But Piper and her sister Phoebe (Alyssa Milano) have more than club business in mind when Prue Halliwell (Shannen Doherty) is hurled into a another dimension by an evil supernatural being. Prue finds herself trapped in the company of another prisoner -- one of the Four Horsemen of the Apocalypse (War, Strife, Famine, and Death, remember?). Thus, Prue's sisters, and their Whitelighter, Leo (Brian Krause), find themselves in the position of not only rescuing Prue, but also preventing the destruction of the world.