THE McKELVAIN FAMILY IS IN A CRISIS AND IT'S UP TO NANNY YVONNE TO SAVE THE DAY ON "NANNY 911" WEDNESDAY, DECEMBER 15, ON FOX

Nanny Yvonne has her work cut out for her with the McKelvain family. Stevi and John, parents of a 7-year-old daughter and three boys aged 6, 3 and 2, are at their wits' end. When the kids aren't fighting to get their parents' attention, they're battling each other. With all the kicking, screaming, shoving and wrestling, Hurricane McKelvain is out of control. Meanwhile, Stevi and John barely have time to spend alone together. Assigned to the case by Head Nanny Lilian, Nanny Yvonne has packed her bag of tricks and is heading to the McKelvain household to work her Mary Poppins-like magic on this unruly bunch on NANNY 911 Wednesday, Dec. 15 (9:00-10:00 PM ET/PT) on FOX. (NAN-105) (TV-PG)

Cast: Head Nanny Lilian, Nanny Deb, Nanny Stella, Nanny Yvonne and Butler Fraser.