Friends Stephen Hardiker and Martin Cole use canal towpaths to travel almost 100 miles on foot and bicycle to a caravan in Wales. Along the way, IT manager Martin comes up with an ingenious way to stay in touch with their loved ones - but will the cyber team crack their code? Meanwhile, 25-year-old Adam Young from Wales learnt survival skills from his father and is keen to put everything he knows into practice. However, when they pick up his lead, he spends an anxious night hiding out in the Dales.