Join the first ever expedition to venture into the Himalayas in search of big cats. Closed to outsiders for years, Bhutan is a forgotten world. No one knows how many tigers prowl the jungles and mountains here, but if the rumours of a healthy population are true, it will give credence to a proposed 2000-mile long 'tiger conservation corridor': an ambitious project that would allow the last remaining big cats to move freely between Burma, India and Nepal. Moving through the jungle on elephant back, the experts install the latest camera-trapping technology and FBI fingerprinting software to identify individual animals. A specially trained sniffer dog tracks down tiger dung, and thermal imaging cameras spot tigers at night. Heading to the peaks, the team climb valleys, shoot waterfalls and live with yak herders. From leach-ridden swamps to breathless, icy summits, nowhere is out of bounds. Follow the expedition every emotional step of the way as they strive to find evidence that could help bring wild tigers back from the brink of extinction and safeguard their future.