The Bureau of Paranormal Research and Defense, also know as the BPRD, is the group led by Hellboy who are dedicated to ridding the material world of evil monsters and spirits.
Following a devastating mission in the mountains, Johann and his troops take on an easy assignment destroying a monster. But things go bad when the civilians protecting it fight back and the Bureau agents turn against Johann, leading to a traumatic turning point in the ghost agent's career. This volume collects B.P.R.D. Hell on Earth