Ok, all I can remember about this is that I watched it as a child (I was born in '84) and it was about this boy who gets in a sleigh with a queen of some sort, it is snowing all around, and she gives him chocolate in the seigh and takes him to her castle (or maybe it was a girl?) and then there is a sibling envolved that one or the other has to save from the Queen. I know it's a bad description but it's all I can remember.