Hargittai tells the story of five remarkable Hungarians: Wigner won a Nobel Prize in theoretical physics; Szilard was the first to see that a chain reaction based on neutrons was possible, initiated the Manhattan Project, but left physics to try to restrict nuclear arms; von Neumann could solve difficult problems in his head and developed the modern computer for more complex problems; von Kármán became the first director of NASA's Jet Propulsion Laboratory, providing the scientific basis for the U.S. Air Force; and Teller was the father of the hydrogen bomb, whose name is now synonymous with the controversial "Star Wars" initiative of the 1980s.

Charged with unlocking mysterious Aeldari devices, Iron Father Kristos of the Iron Hands soon realises the xenos are not alone in their attempts to thwart his duty… For ten thousand years, the Voice of Mars has been a secretive, but powerful position upon the Iron Council. Yet its ambitions, first seeded during the Horus Heresy, are only now beginning to mature. Iron Father Kristos is charged with unlocking the mysterious Eldar devices known collectively as the ‘Dawnbreak Technologies.’ Before he can recover the first element from Fabris Calivant, the Eldar orchestrate a vicious greenskin invasion which descends upon the Knight World. Kristos soon realises the xenos are not alone in their attempts to thwart his duty. His own brothers also seek to possess the formidable powers for their own ends. In a mission that pitches Clan against Clan, Iron Hand against Iron Hand, to what lengths will the Iron Father go to secure victory?