British actor Joanna Lumley (Absolutely Fabulous) last visited the USSR in 1966 on a modeling job. Almost 50 years later, she finds herself back there on a romantic rail trip from Hong Kong to Moscow via China and Mongolia. It’s a journey of nearly 6,000 miles from east to west taking in a panorama of vistas, people and places – and immense superpowers steeped in rich history and radical change.