Getting Over The Glums

Livingstone and Reenie are struck by the 'glums', a rare Animalian version of the blues. There is only one cure for the syndrome: a good, long laugh. But those affected with the glums don't find anything the least bit funny, so Alex, Zoe, G'Bubu and Iggy must criss-cross the kingdom in search of the funniest joke in Animalia.