The Australia Zoo teams up with Dr. Mark Read in a mission to capture and tag nine massive crocodiles and track their migration across Australia.

The Australia Zoo team relocates 11 crocodiles into new exhibit areas, however, the latest addition, Casper, might prove to be Steve's biggest challenge.

Exploring Madagascar's rugged terrain and underground rivers, Steve meets chameleons, snakes and crocodiles that roam the island nation.

Steve and Wes find themselves island hopping around Indonesia, and have chance encounters with lizards, venomous snakes and playful monkeys.

Steve and his team from Australia Zoo are called to undertake the death-defying rescue of two crocodiles in East Timor living in appalling conditions.

Steve Irwin is on his guard as he gets up close with modern-day dinosaurs on Komodo Island.