Frank Elgon answers Dr. Gryce's desperate summons only to find himself pulled into a dying scientist's impossible legacy: a vanished son, Brett, lost years earlier in a colossal "giant world" beyond ordinary space. With Gryce dead and his final wish hanging over them, Frank joins Martt and Frannie, the scientist's grave, fearful twins, as they prepare to use the last surviving machine capable of crossing into a realm where size and time can be altered at will. Their journey leads to a luminous inner world of purple skies, concave horizons, and lush Romantica, where Brett is found alive, transformed, and on the verge of marrying the beautiful Leela. But the wonder of reunion is shadowed by danger. Romantica is a land of music, art, and sensual ease, yet its peaceful people are complacent and unarmed, even as Brett warns that the savage giants who once devastated a city may return. As festivals, weddings, and lake processions unfold, beauty and foreboding move side by side, until the search for truth turns deadly in the ruins of Reaf, where strange creatures, shrinking drugs, and a terrifying struggle over scale plunge the travelers into mounting horror. This edition has been fully restored with modern typesetting, custom cover design.