From the pathological to the eccentric, this documentary series details the stories of people whose interests go far beyond recreational hobbies - where the quest is so passionate it has taken over their lives. Whether investigating the Sasquatch, breeding racing snails, or building the world's most elaborate sandcastles, they are consumed by their singular obsession.

In each episode, Magnificent Obsessions follows around these unusual people for one week, exploring their lives wherever it takes them, anywhere in the world.

Tag along with a university professor as he traces the trail of fairies across the Atlantic; investigate unexplained cattle mutilations with a retired rancher; and follow a 67-year-old man, now struggling with emphysema, as he tries to fulfill his 27-year dream to sail the distant seas on a yacht he designed and built himself.