Arthur The King is the incredibly true story of extreme adventurer Mikael Lindnord (Mark Wahlberg).  Amid an Adventure Racing World Championship he encounters a stray dog who miraculously endures heroic suffering to find him and never leaves his side. Director Simon Cellan Jones (Ballers, Boardwalk Empire, The Diplomat, The Family Plan) talks about what it was like directing the star pooch Ukai, along with hair-raising stunts with the human stars.