You're in a strange land, with strange people, and you're not thinking too clearly. The natives are suspicious, the leaders hostile, the priests cryptic, and no one's bathed in months. Advanced tech is a hole in the ground filled with sewage. The basic food groups are roasted haunch, old fruit, and watered-down wine.
You find out getting home is not going to happen anytime soon. First you need to find some stupid book, then recite some stupid phrase, then bring the stupid book back to the stupid castle. Heck, there's probably a bunch of other stupid stuff you have to do. Just nobody's told you about that yet.
Oh, and did we forget to mention the army of undead looking to gnaw on your soul!

Contains:
A guide to character creation, including ready-to-play champions and companions, as well as specs on the Army of Darkness Cast, for your quick-play pleasure.
A primer on not-so-normal abilities, from magic to supernatural powers.
Guidelines for bringing the little people together, training them, and pitting them against the forces of evil.
A rundown on the Army of Darkness setting, places, people, and events.
Details on the wicked, including evil clones, demons, undead, and other critters.
Blow-by-blow instructions for creating roleplaying Acts and Features.