Some time later, still in Garrington's body, the wizard Merlyn takes Whitman as his champion. He is commanded to find the hero Captain Britain, who is wandering in the coast of Cornwall. Merlyn needs the hero for the defense of Otherworld, his realm, that is being attacked by the Nethergods. The Black Knight is attacked many times by creatures invoked by the sorcerer Mordred but he finds Captain Britain, who is amnesiac. On the road to Otherworld, both heroes are assisted by the old witch Sarah Mumford, the Walker Vortigern, an old king of Britain, and the elf Moondog, the last two sent by Merlyn from Otherworld. On the road, they are attacked by the Iron Ogre, a magic creature invoked by the Evil Walker Cormac. The Ogre bests the heroes and destroys the Ebony Blade. Only a precise arrow shot by the elf Moondog stops the creature. Cormac sends Goblins to battle the heroes and briefly captures Moondog. Meanwhile, when the Black Knight is devastated by the loss of his sword, he meets the Lady of the lake, who gives him the magic sword Excalibur. With the sword, Whitman defeats Cormac. In the meantime Captain Britain is killed by the White Rider, one of the servants of the Nethergod Mandrac, at the door of the passage of Otherworld Whitman and his companions finally cross the doors of Otherworld and fight Mandrac, Lord of the Slain, who was in possession of the body of Captain Britain. Merlyn appears to help the knight and traps Mandrac inside the earth - Merlyn rescues the spirit of Captain Britain from Netherword and defeats Modred, who was attacking him and the knight. In the Otherworld dimension, the Black Knight and Captain Britain go to save Camelot from the attacks of the Nethergod Necromon. In the process, Merlyn reforges the Ebony Sword and King Arthur is resurrected. In the final assault, Whitman and King Arthur succeed in killing Necromon, but Camelot is destroyed. During these events, Black Knight and Captain Britain are briefly kidnapped by the Grandmaster to participate in the original Contest of Champions.