Mr. Link (Zach Galifianakis) is 8 feet tall, weighs 630 pounds, and covered in fur. He can also talk and write letters, as he does to fearless explorer Sir Lionel Frost (Hugh Jackman) when he grows tired of living a solitary life in the Pacific Northwest.
Frost is astounded when he meets the creature, especially when he realizes how humanlike Mr. Link is. They go on a journey to find Link's longlost relatives in the fabled valley of Shangri-La. Along with adventurer Adelina Fortnight (Zoe Saldana), the explorers encounter more than their fair share of peril as they travel to the far reaches of the world.