Colonel Thomas Rose is one of more than a thousand Union officers packed into Libby Prison, a converted Richmond warehouse with whitewashed walls, rampant disease, and no realistic way out. History Hit reconstructs how Rose and his fellow prisoners spent months tunneling beneath the building, digging through a rat-infested cellar the guards called Rat Hell to reach the outside world undetected. The film uses period photographs, maps of wartime Richmond, and historian commentary to lay out the planning, the failed attempts, and the eventual breakout of over a hundred men in early 1864, the largest prison escape of the Civil War. It follows what happened after the tunnel opened: the scattering of escapees through Confederate territory, the manhunt that followed, and how many made it back to Union lines versus how many were recaptured or killed. The narration keeps the geography and timeline clear throughout, treating the escape less as a single dramatic night than as a months-long engineering and endurance problem solved by desperate men.