While busy studying the Book of Shadows, Paige shows a large amount of jealously in how adept Phoebe is while performing her martial arts. As a result, when Paige mixes a potion, she accidentally swaps bodies with Phoebe, and while they try to hide the mix-up from Piper, they have a hard time doing so when the sisters have to go help a Zen Master save her kidnapped father from Limbo.