Dylan Dreyer travels to the mysterious Hebrides archipelago off the coast of Scotland, known as "Europe's Last Wilderness," to find one of the largest gatherings of grey seals on the planet, red deer and signs of ancient man.

Dylan Dreyer explores the hidden oasis of Yunnan in southwest China to visit one of Asia's biggest monkeys; she also treks to the top of the Hengduan Mountains to meet primates that inspired the legend of the Abominable Snowman.