Animalia - Back to the Present

CGI animated series. Alex and Zoe are two kids who stumble across a magic portal hidden in the town library and are led to a parallel dimension called Animalia. After a few days in the real world Alex and Zoe miss Animalia and want to return. But when they arrive, the city is in disrepair. They discover that time in Animalia moves at a different rate and a few days in their world is over a year in Animalia. Much to their surprise, G'Bubu and Iggy are no longer the leaders of Animalia, and instead King Tyrannicus is ruling the city.