Scrooge investigates mysterious delays in the construction of a hydroelectric dam. He discovers a technologically advanced tribe of dwarves living in an underground cave. Gyro Gearloose finds a way to capture lightning and resell it. Scrooge travels back in time to learn what happened to the Venus de Milo's missing arms.
Characters: Uncle Scrooge; Donald Duck; Huey; Dewey; Louie; Governor Nomax; Dano; Gyro Gearloose; Helper; Morty; Ferdie; Grandma Duck
Script: Brian Claxton; Paul Halas; Gary Gabner; Carl Barks; Jim Kenner; Don Hinrichsen; Bert Schneider
Pencils: Vicar; Carl Barks
Inks: Vicar; Carl Barks
Colors: Summer Hinton; Mike McCormick; John Wilcox
Letters: John Clark; Garé Barks; Michael Taylor
