As long as there have been Sneetches on beaches, the Star-Bellies and Moon-Bellies have lived separate lives. But when two young Sneetches form an unlikely friendship, they teach their communities that differences don't need to be avoided, they can be celebrated.

When a grumpy moose leader decides that he wants to be the happiest moose in the pack, he calls upon sweet Thidwick to help him. As this unlikely duo embarks on a comical adventure, Thidwick discovers that the key to happiness is being kind to others.