A young university student spends her free time working as stuntwoman for cinema and television. Her specialties are action scenes, stunts fraught with suspense, perilous situations that in fiction stories fatally end with the death of her double. It could sound like a mania driven by the passion for risk. Actually it is an obsession through which the athletic girl flatters herself that she can sublimate a terrible guilt: feeling responsible for the tragic death of her big love. A grief never healed. An outstanding issue. A shadow that no light will never dissolve. Her professor of astrophysics will help her to regain the existential stability she had lost.