"Chris" (Bart Harder) and his friend "Lluis" (Charles Pulido) haven't seen each other for the best part of a decade, since they were college roommates, when they reunite to undertake the 600km walk from Milngavie near Glasgow all the way up the west of Scotland to Cape Wrath. Equipped only with what they can carry, the pair set off and as we enjoy the beautiful scenery - and the blood-sucking midgies feast on the two men - we begin to understand that this isn't a straightforward relationship. Their problem, and so what turns out to be a problem for us too, is that they cannot or choose not…