While Cody explores lost industries in the ‚Äòugliest‚Äô city in the world with freerunner Abudi Alsagoff, Josh, together with his old neighborhood friend John Yurei, is in the famous American prison 'Joliet', where prisoners build their own cells.
Josh and urban exploring-legend Steve Duncan travel to the arctic island of Spitsbergen, Norway, where there is an old Soviet mining town waiting to be explored. Meanwhile Cody explores the dark and cruel history of Goli Otok prison in Croatia.
The final episode reunites Josh and Cody after months of travelling separately, this time to the nuclear disaster area of Fukushima in Japan. Meanwhile, they look back at their adventures and reveal the result of their rankings of locations.