With a promotion in the offing and his beautiful wife Nena at his side, things couldn’t be better for ambitious policeman Hector Mariscal. Before he can enjoy the good life, though, a final, top-secret assignment must be carried out: to transport-by rail-a highly toxic cargo across Bolivia’s high desert backcountry and “dispose” of it in a remote indigenous village. With kindly engineer Klinger guiding his beloved steam locomotive Federica, and presented with a crew of hapless cops and an unexpected young stowaway, Mariscal finds that there’s much more on the line than he imagined in this sharp, energetic satire.