Thirty-one-year-old Cornelia Brown adores classic romantic films. Anything starring Jimmy Stewart or Cary Grant will do nicely, especially The Philadelphia Story. Unapologetically idealistic about love, Cornelia appears to catch the break of a lifetime when the dashing Martin Grace, her own personal Cary Grant, comes strolling into her life. But Cornelia's life truly changes one snowy day when she looks up to find troubled 11-year-old Clare Hobbes standing before her.