Ice is an important part of Elsa and Anna's kingdom. The people all need it in the summer months to keep their food fresh and themselves cool, and ice cutting is one of the most important jobs. When Oaken comes up with a unique new invention---an ice cutter---everyone is skeptical. But this machine really works, and cuts the ice twice as fast! Kristoff challenges the ice cutters and Oaken and his machine to a friendly competition, but the day of the machine and all of the harvesters disappear. Can Elsa and Anna figure out what happened and find the missing workers? Recommended for ages 6 to 9 years.