This first leg takes him from the rugged coast of South Africa, where he joins the fight against wildlife poachers, through Mozambique, and on to the tropical island of Zanzibar. On the way, he swims with sharks, meets the refugees who have found shelter in a luxury beachfront hotel, and travels on a huge container ship fortified against the constant threat of pirates.
The adventurer begins his final leg on the northern tip of Sumatra, near the epicentre of the 2004 Boxing Day tsunami, finding out how the province of Banda Aceh has undergone many changes since the disaster. He also explores the illegal trade in exotic pets in the Indonesian capital of Jakarta, before heading for Australia, the final country on his epic journey. There he visits the unspoilt wilderness of the Kimberley region, meets a real-life crocodile hunter and goes fishing with Aborigines campaigning to stop the construction of a giant gas plant.
The actress flies over Tokyo in a helicopter. The city was bombed extensively during the Second World War, so almost all of it is a symbol of the post-war economic boom that saw Japan become the world's second largest economy. While in the capital, Joanna heads out to a nightclub to see a Japanese girl band and witnesses the largely male audience perform almost as much as the artists on stage. Later, Joanna travels to the Kiso Valley to walk the Nakasendo Way, an ancient route that once linked Tokyo to Kyoto, a place best known for that most famous of Japanese traditions, the Geisha.
Simon travels from Darwin in Australia's Northern Territory or 'Top End', across to the remote Cape York Peninsula, and on to the Great Barrier Reef. Simon sets off from Kakadu, the largest national park in the world, where the wildlife is under threat from the march of millions of poisonous cane toads. He joins a team of toad-busters catching the amphibian invaders - originally introduced to the country to kill pests. In Robertson barracks Simon meets Australia's best - and only - tank regiment. They will soon host 6,000 American Marines - evidence of Australia's strategic importance in the Asia Pacific region. On the Cape York Peninsula Simon joins scientists catching deadly box jellyfish, whose venom could prove to have great medicinal value. And on the Great Barrier Reef he dives in search of the starfish destroying coral, before flying 100 miles out into the ocean to watch as a huge tanker is expertly guided through the fragile reef.
Joanna ends her 5,000 mile journey in the place where she was born, Srinagar in Kashmir. She starts off in the Ranthambhore National Park, where she hopes to spot a tiger in the wild. Meeting tiger conservationist Belinda Wright, Joanna witnesses the work of local NGO Tiger Watch, who are attempting to break a cycle of poaching and poverty through education. Home to over 18 million people, Delhi is a city of stark contrasts. The extreme differences are obvious when Joanna visits a homeless community - where 10,000 men live under a flyover - and visits the modern part of the city where she has a go at working in a hi-tech call centre. The final leg of her journey takes her north from Delhi to Dharamsala, where she is granted a private audience with His Holiness the Dalai Lama. Joanna concludes her trip with a stay on a houseboat in Srinagar, as her parents did on honeymoon in 1941.
In the first episode of this eye-opening series, Giles Coren and Monica Galetti join the 9,500-strong workforce in one of the world's biggest hotels - Singapore's Marina Bay Sands. This epic hotel caters for one million guests every year, cost 3.5 billion to build and was created as part of a government plan to triple tourist income to Singapore within ten years.
Joanna meets the Maharaja of Dungarpur, who shows her around his lakeside palace. In stark contrast, Joanna visits a Dalit community - considered to be India's lowest caste - in Gujarat, and hears of the everyday discrimination these people experience under India's still deeply entrenched 3,000-year-old caste system. She later joins in a Hindu house warming ceremony, where a cow and calf are brought into the new house for luck. Braving the roads of Mumbai, Joanna takes a ride in the city's only all-female taxi company and visits the Times of India, where her uncle was editor of the paper in the 1930s and 40s. She then overcomes her vertigo to explore the World One Tower, soon to be Mumbai's tallest luxury residential building.