Iceland, known as the land of fire and ice, has one of the highest concentrations of waterfalls in the world, which makes it one of the most popular places for extreme kayaking. Even so, given the difficulty, the inaccessibility of its rivers and its harsh climate, visitors are few and far between and there is still a lot of territory left to explore through this sport. Three friends aim to enter new valleys to explore rivers and waterfalls that have never been descended before. But not knowing what you might find always brings surprises – and not always the ones you expect.