Racing against time to exchange a gift they'd bought for Danny (Bob Saget), Jesse (John Stamos) and Michelle (the Olsen twins) are placed under "house arrest" on Christmas Eve by curmudgeonly toy store owner Mr. Dreghorn (Mickey Rooney). As it turns out, old man Dreghorn isn't nearly as nasty as he seems, but merely a wee bit lonely. Elsewhere, the Twins are terrified at the prospect of meeting Santa Claus, whom they assume to be some sort of bearded behemoth--until a surprise substitute Santa comes to the rescue. ~ Hal Erickson, Rovi