This documentary series is presented by the television personality and an enthusiast of the Chris Tarrant train. Tarrant travels everywhere using the most romantic means of transport for any traveler, the train, but also does not choose any train line, takes us on a journey on the most extreme train lines in the world from the coast of India, to the interior of Australia, the jungles of the Democratic Republic of the Congo, Cuba, Siberia or the Andes, Tarrant moves us on a voyage of discovery and introduces us to the railway drivers and engineers who put these places on the map.