From Germany to the Caspian Sea

S1 E1: After two weeks, the trip gets intense: on the Abano Pass in the Great Caucasus mountains- one of the most dangerous routes in the world- the two adventurers must master their first real test, only to be stranded shortly afterward at the Caspian Sea in over 100-degree sun. Caught in a nerve-racking test of patience behind barbed wire, will they make it across the largest lake on Earth?