To understand the secrets of the Earth, we must look underneath the surface. We must descend into the depths, follow speleologists who extend the boundaries of our knowledge. Searching for the Shadow is the story of intuition, intuition which discovers an endless underground labyrinth in a Tatra peak, a cave system so big it goes beyond our comprehension. Each discovered corridor, however, requires a five-day stay in the bowels of the peak. Thanks to the unique, authentic images captured during the process of discovering new gigantic spaces, we enter the soul of cave explorers to understand what drives them to search for the unknown.