A Trial of Courage is an American drama and adventure film directed by Simon Cellan Jones and starring Mark Wahlberg, Nathalie Emmanuel and Simu Liu. The production is based on the true story of Mikael Lindnord (Wahlberg), an adventure runner who, in 2014, during one of the competitions, found a stray dog and decided to adopt it in what would become his most epic race. all. Over the course of ten days and 435 miles, an unbreakable bond is built between the runner and dog named Arthur, redefining the meanings of victory, loyalty and friendship.