About the book: 2019 / Anna has never had a real fun birthday, and now Elsa is going to fix that - she’s been preparing an amazing surprise party for her sister for several weeks! She is helped by Kristoff, Sven and Olaf, as well as all the inhabitants of Arendelle. When the cherished day arrives, it turns out that the queen has been overworked and has a slight cold. She could not even imagine what incredible consequences this could lead to.!