In this film we see television presenter Dan Snow travel to a remote corner of Southern Poland, near Walbrzych, in an effort to unravel one of the last great mysteries of the Second World War. It is a tale which seems to have attracted the worlds media and it has captured the imagination of many who live there even members of the Polish government.

Snow is hunting for a secret tunnel that local legend claims was hidden by the Nazi’s, but this is no ordinary tunnel, inside lies a lost train said to be filled with gold. This legend received worldwide coverage when two amateur researchers declared that they had found it back in August 2015.

As Snow goes along with these treasure hunters he carries out his own investigation, one which leads all the way to Adolf Hitler himself and his secret plans for this remote part of the Third Reich during the closing months of the war.