Simon travels the length of California. He climbs to the top of one of the world's tallest trees, and meets the fire crews tasked with tackling the ever-present danger of wildfires, a growing threat given the state's changing climate and chronic shortage of water. He also meets street doctors providing much-needed medical support to people living in extreme poverty and visits a city on the desert for Americans who have dropped out of the rat race entirely.
On the last leg of his journey across the South American country, Michael explores the Brazilian south, where he is surprised by the rich diversity of European and Asian influences. Along the way he meets Dom Joao de Orleans e Braganca, second in line of succession to Brazil's defunct throne, goes flying with a man who has made a fortune out of rubbish and meets rap star Criolo, who believes social equality is a distant dream for most of his countrymen. Travelling farther south to Blumenau, the former Python's views on what makes a typical Brazilian are challenged when he finds German speakers and Bavarian dancers, before he catches piranha for sushi and helps cowboys treat a calf attacked by a jaguar
The second leg begins in Siberia and takes him to Russia's far south west and the majestic Caucasus Mountains. From Lake Baikal, the oldest and deepest lake on Earth, Simon takes the Trans-Siberian Railway to the city of Krasnoyarsk, the scene of brutal violence in the 1990s, and now the location of a cafe paying homage to Vladimir Putin. Simon is introduced to a Siberian community that worships a former traffic cop they believe to be the reincarnation of Christ. Along with a rare interview with the messiah himself, Simon meets some of the daughters of his followers being educated to become future brides of worthy men. After encounters with Tuvan throat singers and Cossack street patrols, Simon visits Dagestan, a largely Muslim region that has been scarred by jihadist violence. He meets security forces who use highly trained dogs to tackle the terrorist threat, and villagers attempting to keep their ancient tightrope-walking traditions alive.
In the first episode, Julia visits the picturesque, rustic and rugged island of Crete, a favourite island with British holiday-goers, but Julia steps away from tourist trail and heads deep into the heart of the island to explore the Dikti Mountains and its striking plateau of windmills.
Episode 3 takes us to Northern Romania and the Maramures - one of the most picturesque regions in Romania. Here we experience festivals and weddings and learn about the evolution of traditional folk music with renowned singer Grigore Lese and pop idol Loredana Groza. We visit historic wooden churches and villages, which have been preserved, despite the march to modernise. Charlie Ottley explores the wilderness by steam train and on foot through Caliman National Park and the mysterious Twelve Apostles. Further east we drop in on a scheme to rewild Buffalo and visit the incredible painted monasteries of Bucovina before heading south to see what's being done to protect the ancient forests of Transylvania. En route Charlie meets a number of local and internationally acclaimed characters and looks at ways tourism is helping to preserve natural habitats. Wild Carpathia 3 finishes with some enlightened words from HRH The Prince of Wales who once again describes his passion for Romania and the urgent need to protect its rural heritage.