Erwin Valdebenito is an anonymous and quiet man who works in a state office. At the same time, he is an athlete who trains daily for the sport he loves: the ultramarathon. Every morning, Erwin Valdebenito risks his life in the middle of the road, driven by a desire that grows more intense each day. Running to the limits of obsession means looking at the normal and the bizarre, where the mystery of every dream prevails.