Three exceptional athletes in the demanding field of extreme sport are followed. They fly along cliffs, dive without oxygen into the depths of the sea and prove the capabilities of the human body during the longest endurance bike race. What motives and thoughts have made them into modern day heroes? What causes the fascination for individuals who expose themselves to exceptional risks? The movie follows these people in the attempt to find the limits of performance. We get to know their environment, their companions, but also listen to critical voices. We hear the desires and fears of the families and venture, through the inner circle of friends, into the psyche of the athletes. And what motives are important for these pursuits? Is it the lust for fame? For immortality? For the absolute life experience?