Over the course of ten days and 435 miles, an unbreakable bond is forged between pro adventure racer Michael Light and a scrappy street dog companion dubbed Arthur. It follows Light, desperate for one last chance to win, as he convinces a sponsor to back him and a team of athletes for the Adventure Racing World Championship in the Dominican Republic. As the team is pushed to their outer limits of endurance in the race, Arthur redefines what victory, loyalty and friendship truly mean. starring Mark Wahlberg, Simu Liu, Nathalie Emmanuel, Ali Suliman, and Bear Grylls himself. Simon Cellan Jones directs from the screenplay by Michael Brandt; Based upon a true event, as depicted in the book "Arthur: The Dog Who Crossed the Jungle to Find a Home" by Mikael Lindnord. a Tucker Tooley Entertainment/Mark Canton/Municipal Pictures production for Lions Gate Films, with eOne.