A charming holiday picture book about a girl, her pet lion, and a Christmas adventure.

Iris and her lion go everywhere together. But when Christmas comes and the family is going away, Mum says the lion must stay behind. After all, you can't take a lion on a train. Luckily the lion has other ideas. He sets off on a festive, snowy adventure to find Iris—and almost bumps into Santa Claus!