"I can't do it alone, Sven. I need you to show me the ropes. We'll be the best substitute ice team there ever was!"
Olaf & Sven on Thin Ice (ISBN 978-1-4847-2519-1) is set in a time after the events of Frozen. In the book, Olaf hears Anna and Kristoff talking about a picnic. This leads Olaf to think that Kristoff needs someone to replace him as official Arendelle Ice Master and Deliverer. Once he had recruited Sven, the two set out into the mountains, after Olaf has dubbed himself "Substitute Official Ice Master and Deliverer".
As the Official Arendelle Ice Master and Deliverer, Kristoff never misses a day of work! But while he’s getting ready one day, Olaf overhears him talking to Anna and thinks he’s decided to take the day off. Olaf quickly runs outside to tell Sven! “I have the best news ever! I am going to the be the Official Substitute Ice Master and Deliverer for the day! And you are going to help me!” he says confidently. There’s no stopping Olaf, who is now proudly telling everyone in the kingdom the good news. By the time Kristoff heads outside to meet up with Sven, Olaf and the trusty reindeer are long gone for their work adventure! Thankfully, Kristoff can follow their tracks…and their trail of chaos! Join in on the fun and enjoy all the goofy moments with this lovable snowman and kind-hearted reindeer.