Shadow Walkers is an intense thriller about a team of scientists and soldiers who find themselves in an underground lab with no recollection of their identities. They soon realize they are trapped, with their only chance of survival being a journey deeper into the facility to reach an escape tunnel leading to the surface. With limited electricity, they navigate the darkness, only to encounter a nest of genetically engineered beasts lurking in the shadows. These creatures, designed for warfare, possess lethal claws and rows of sharp teeth capable of tearing a person apart. As they dodge danger at every corner, the group gradually recovers their memories, uncovering the origins of these deadly beings and their own involvement in their creation.