Desperate for one last chance to win, Michael Light convinces a sponsor to back him and a team of athletes for the Adventure Racing World Championship in the Dominican Republic. As the team gets pushed to the outer limits of endurance, a dog named Arthur comes along for the ride.

Animal lovers of the world, unite! Transporting us to the breathtaking mountains and rainforests of the Dominican Republic, Simon Cellan Jones’s uplifting film stars Mark Wahlberg in an extraordinary tale of friendship. As timeless as the bond between man and dog, this is an adventure for the ages.