One day Moomintroll notices that something strange has happened in the Moomin Valley - everything is grey; not just the sky and the river, but the trees, the ground, the Moominhouse, too! ... See full summary »
Max von Sydow,
8-year-old Selma Traskvist and her family are in danger of being evicted from their home, when Selma meets scientist Efraim von Trippelhatt who is working to build an airship and prove Santa's existence.
The Olsson family move into a castle that turns out to be haunted. The kids, with their dim parents oblivious to all the strange things that are happening, are caught in the middle of a big mystery in the centuries old castle.