Four orphaned children find an abandoned boxcar in the woods and decide to make a home there. It is all enormously unbelievable, and of course they get a happy ending when a rich and kind relative comes along, which is just as unlikely I suppose, but still. What makes it likable in all its ludicrousness is that there's very little whining and a lot of cheerful making-do, as they construct beds out of pine needles and scavenge for crockery at the local dump and dam a nearby stream to make a place to bathe. It's not exactly Robinson Crusoe in its ingenuity, but then Crusoe was a miserable bastard who should have stayed lost, and I'd rather have these kids for company any day.