Celebrated children's author Kelly Leigh Miller (I am a Wolf; I Love My Fangs) teams with Avatar fandom favorite artist Diana Sim to bring young Avatar fans and their families this heartwarming tale of love, celebration, and friendship, in collaboration with Nickelodeon and Avatar: The Last Airbender animated series writer Tim Hedrick.Can you imagine not knowing your own birthday?That's the situation for Aang, who was frozen in an iceberg for a hundred years! Luckily his friends Katara, Toph, Sokka, and Zuko have a plan to surprise him with a new special day to celebrate. But they'll have to be careful while they prepare—it's a surprise!