The first episode finds Arthur in Siberia. He flies over a giant open-cast diamond mine in the town of Mirny and meets the miners who have toiled for years below ground. He moves on to the Oymyakon region, where local boy Aleksandr Dolzhenkov is arranging a scientific expedition to a frozen lake, but things go badly wrong when a helicopter carrying production crew crash lands on a bank of thick snow. Arthur then meets Mikhail and Tatiana Itelgelov, who live off-grid and breed Siberian horses.