It's Christmas Eve at the Nursery and Timmy and his friends are very excited! There are decorations to be made, a Christmas tree to be chosen, letters to write to Santa and even a Special Santa post box to post them in ! Everyone is busy and full of jingly bell fun, so busy that they don't notice the blizzard outside until it's time to go home. When Osbourne looks out of the window he's shocked to see the Nursery Bus buried under a snowdrift, the lane is impassable, they're snowed in ! Timmy is very upset and his eyes brim with tears. He thought he'd be at home on Christmas morning unwrapping the present he wrote and asked Santa for - his dream bike. Osbourne and Harriet make the best of the situation creating a lovely, snug, Christmassy atmosphere. Timmy and his friends are going to have a surprise Christmas sleepover at the Nursery!