123Movies. Natalie Berry is one of the UK’s leading female sport and competition climbers. Despite having lived in Scotland all her life, home to some of the best traditional and winter climbing in the world, she has yet to venture into the mountains so close to home. ‘Transition’ follows Natalie over the course of a year as she takes her first exploratory steps into a new world, closely following the highs and lows of the pursuit of a life in the mountains.