A Union soldier flees from battle and is rescued unexpectedly from free Black man Kitch and his friends. Risking everything, Kitch takes William deep into the woods to the safety of his adopted home. It's here that William discovers Kitch is a part of secret community of freed slaves, who run a portion of the Underground Railroad. When a ruthless and desperate slave catcher discovers the underground network, he conspires to bring it burning down to the ground.