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Overview
"Mildred Hubble spells trouble."
There's a blizzard raging outside & the girls are desperately trying to stay warm. Amidst all the chaos, who should arrive seeking shelter from the weather, but Chief Wizard Hellibore, who is in a particularly mischievous mood & pronounces the day to be an upside-down day. Everything is turned on its head; teachers and pupils change places and there are games instead of lessons!