It is an animated/cartoon fairy movie which was shown on CITV a few years back.
I remember it is about a boy and girl who go to stay in the countryside with grandparents or something. They see a black crow flying behind the car which later turns out to be a fairy, not sure if it is good or bad.
Then the evil fairies steal a farm girls baby and replace it with a changeling, with the promise to return it if she marrys the evil guy, despite her being in love with a good fairy! The boy and girl get shrunk down to fairy size, and help save the day etc!
I guess this probably doesn't make much sense but maybe SOMEONE can help me!
