A team races to save a wombat named Daisy suffering from mysterious health issues before it's too late. Keepers Georgie and Luke venture on a challenging road trip to transport a giraffe calf, and a secret hidden underneath the Melbourne Zoo is revealed.

Keepers become concerned when the big move for lion brothers Lwazi and Ato is delayed. Young rhino Kifaru is challenged during a mating ritual, and a brilliant plan saves the endangered mountain pygmy possums.

In the Savannah, Dr. Bonnie must perform a critical surgery on zebra Zaide's badly damaged tail. Tiger Indrah gets an incredible tenth birthday surprise, and Dr. Sarah is determined to solve spider monkey Isobella's medical mystery.