Princess Anna, Queen Elsa, Olaf the snowman, and all the stars from Disney Frozen are back in an all-new magical chapter book series perfect for girls and boys ages 6 to 9. It's time for the Arendelle Cup--an annual 150-mile sleigh race. People come from far and wide to compete, and this year, to celebrate the castle gates finally being open, Anna and Elsa are going to represent Arendelle themselves!