The campaign "A Cold Fire Within" is for Pulp Cthulhu. In 1935, a case of disappearance leads to the discovery of a rotten scheme that could change time and bring destruction to the world. A heretic seeking to unleash the power of the Great Old Ones leaves a path through the Catskill Falls and to the very center of the planet!

Within the underground world of K’n-yan, the heroes will encounter forgotten secrets, strange traditions, and peculiar inhabitants. Curious cities of gold, ruined temples, and dark forests are just some of the horrors lurking beneath the surface. However, before the heroes descend into the nightmare, they must face remnants of ancient worlds, unruly mountain folk, and psychic demons. Along the way, the heroes may discover that returning to the end of an ancient city is the only solution! Perhaps in the ruin of Lomar, they will uncover the secrets of the past and present.