Desperate Housewitches

Wyatt's school play Cinderella brings out the competitive nature in Piper when her hand-sewn costume and parenting abilities are criticized by another mother. Things go from bad to worse when it is revealed that this Stepford-wife-like "Oh-so-perfect" mother is in fact possessed by a demoness focused on kidnapping Piper's son Wyatt and using him in a plot with other demons to resurrect the Source of All Evil at Magic School; which the demons have forcibly taken possession of after the (believed and faked) deaths of the three Charmed Ones. Meanwhile, Paige sees Dex with another woman, who turns out to be his ex-girlfriend who is a compulsive liar, and despite Phoebe's objections, interferes by masquerading as the woman looking and expecting evidence Dex is two-timing Phoebe. Dex apologizes to Phoebe after Paige commits her interfering faux pas and her masquerade crashes, saying he probably shouldn't have stayed in touch with and should have made a more complete break with his old girl earning points for earnestness and honesty. Meanwhile, Billie and Leo sniff out the plot at magic school and research a spell to return Billie to our world for power-of-three reinforcements while Leo stays nearby with Wyatt who has accompanied the possessed mother there. With Wyatts powerful help, the demoness has conjured the source who appears to be fully resurrected and ready to take command again in the Underworld. Billie's timely return with Paige, Phoebe and Piper enables the three to intervene in the demon's festivities. Piper vanquishes both threats by dealing with the demoness