The ghost-hunting crew of Achievement Haunter journeys all the way to West Wycombe, England, where they investigate the famous "Hell-Fire Caves", a haunted underground location that holds the secrets of a murdered young woman and a debaucherous secret society.

In the season finale of Achievement Haunter, the crew treks to Jefferson City, Missouri, a place known as the "Bloodiest 47 Acres in America." The team attempts to hunt down the ghosts of death row inmates, hardened criminals, and a snitch killed in one of worst riots in American history.