Army of Darkness follows Ash Williams, who is transported back in time to the medieval era. Armed with his chainsaw and shotgun, Ash must retrieve the Necronomicon, a powerful book of the dead, to return to his own time. Along the way, he battles an army of undead, led by his evil doppelgänger, and ultimately saves the kingdom from destruction. This film blends horror, comedy, and action in a unique and entertaining way.