Various Chicago citizenry are being killed with medieval weaponry. Upon investigating, Kolchak finds that they were all tied to the conversion of a small museum into a disco. It turns out that the museum houses the armor of Guy de Metancourt, a misanthrope who swore upon his death that his final resting place would never know gaiety and laughter. Now, his ghostly armor animates and kills those who would disrupt his resting place. The only way for Kolchak to stop the unchivalrous knight is to destroy it with a holy axe blessed by the pope.

Des promoteurs d'un night-club sont assassinés sauvagement. Kolchak découvre que le meurtrier est le fantôme d'un chevalier en armure armé d'une épée.

Zwei Männer sind auf äußerst bizarre Art und Weise gestorben: durch einen mutierten Pfeil und einen monströsen Eispickel – abgefeuert von einem Mann in Ritterrüstung. Den Mord an Minerva Musso kann Kolchak nicht verhindern, wird er doch vom Ritter selbst vorher ausgeknockt. Nur eine geheiligte Axt kann den mordenen Ritter jetzt noch von seinem Rachefeldzug abhalten.

Carl Korchak (Darren McGavin) é um jornalista que trabalha para o Chicago's Independent News Service, investigando diferentes casos para suas matérias, ele sempre acabava envolvido com fenômenos sobrenaturais. Porém, não importava quantos vampiros, lobisomens, demônios ou seja lá que outras criaturas misteriosas cruzassem seu caminho, ele nunca conseguia convencer seu editor da realidade daqueles acontecimentos.