It is the year 891 of the Imperium, and you work as a "Line Bull" - defending traveling railroad cars from the dead and rogue spirits who dwell in the pitch-dark emptiness between inhabited cities. A quick-start roleplaying kit containing a starting situation and setting as well as character creation and action-resolution mechanics. Based on the Apocalypse World system by D. Vincent Baker.
Each city of the Imperium is encircled by crackling lightning-towers to create an electrical shell that spirits cannot penetrate. By law, all corpses are incinerated with lightning-oil (to destroy the spirit essence within) but wealthy citizens, heretics of the spirit cults, or the criminal element often arrange for a ghost to escape destruction at the crematorium. So called "rogue spirits" are also dealt with by bulls like you. For a fee, of course.