Chicago resident Clark Wilhelm Griswold Jr has REALLY got the Christmas spirit this year, and his wife Ellen, son Rusty, and daughter Audrey have noticed it. Clark has invited Ellen's parents Arthur Smith and Francis Smith, his own parents Clark Wilhelm Griswold Sr and Nora Griswold, and his Aunt Bethany and Uncle Lewis to spend the holidays at the Griswold house in Chicago. Clark is obsessed with making everything go perfectly during the holiday season, but as soon as everyone arrives, things start going haywire, especially when the Griswolds receive some uninvited surprise guests from Kansas -- cousin Catherine, her sloppy husband Eddie, and two of their kids, Rocky and Ruby Sue. Chevy Chase .... Clark Griswold Beverly D'Angelo .... Ellen Griswold Juliette Lewis .... Audrey Griswold Johnny Galecki .... Russell 'Rusty' Griswold John Randolph .... Clark Wilhelm Griswold, Sr.