S1, E5: It's the journey in hell, through the Tibet’s mountains. It's 100 kilometers long and only with the help of their father do the children have a chance of getting it safely. The only way there takes them over a frozen river, through the Tibetan mountains, by icy temperatures; and all this for almost an entire week. It carries them past fallen avalanches while the sun beats down on the ice causing it to melt and making every step life threatening...