Jack Kirby (layouts); Werner Roth [as Jay Gavin] (pencils)
The X-Men [Professor X; Cyclops; Marvel Girl [Jean Grey]; Angel; Beast; Iceman]; Sentinels (introduction); Dr. Bolivar Trask (introduction); Zelda; Mr. Worthington; Mrs. Worthington
After their battle with the Juggernaut, Xavier sends the X-Men on vacation. Reading a story in the paper about Dr. Trask and the mutant menace, Professor X calls for a televised debate with the anthropologist. During the broadcast, Trask unveils his Sentinels, robots built to capture and nullify mutants. The Sentinels proclaim themselves superior to humans and prepare to take over. Xavier calls his X-Men to help. When one of the Sentinels falls, the giant robots capture Trask and return to their base. The X-Men follow and find a hidden complex with weaponry aimed directly at them.
The Plunderer gets his hands on Ka-Zar's half of their father's medallion and uses the mystical Plunder-Stone to start taking over the world. DD gets in the way and helps take the would be world conqueror down. Foggy and Karen show up in England to defend Ka-Zar against trumped up charges his brother brought against him.