From the creators of The Tiger Who Came to Tea and The Snowman and The Snowdog comes a delightful Christmas adventure featuring an all-star voice cast led by Benedict Cumberbatch, Claire Foy and Miriam Margolyes. It’s Christmas Eve and Mog, the Thomas family's beloved cat, wakes up and nothing is right - Debbie, Nicky, and Mr and Mrs Thomas are busy, the house is full of visitors and where on earth is that Christmas tree going? Mog scrambles onto the roof and refuses to come down. However, to everyone’s delight, Mog unexpectedly returns with a bang, just in time for all the Christmas Day fun.