Dreadknight defeats and imprisons Iron Man and the Frankenstein Monster at Castle Frankenstein. Jasper Sitwell pursues Krissy Longfellow and Harry Key for stealing Stark patents: a chase witnessed by Jack Hart who decides to investigate. Iron Man and the Monster are chained in a dungeon with Victoria von Frankenstein. When Dreadknight tortures Victoria, the enraged Monster escapes his bonds, distracting Dreadknight enough for Iron Man to escape. Iron Man and Dreadknight battle. When Iron Man saves Victoria from a blast of Dreadknight's gun, the Monster steps in to defeat the villain, knocking him down the stairs. Iron Man departs, leaving the injured Dreadknight in Victoria's care.