Along the streets of the once-great Midwestern city of Trude, the ornate old buildings lie in ruin. Shrouded in disappointment and nostalgia, Trude has become a place to "lose yourself," as one tourist brochure puts it: a treacherous maze of convoluted shopping malls, barricaded libraries and elitist assisted-living homes. One night at Trude's opera house, the theater's most celebrated mezzo-soprano vanishes during rehearsal. When police come up empty-handed, the star's husband, a disconsolate legal clerk named Sven Norberg, must take up the quest on his own. But to discover the secret of his wife's disappearance, Norberg must descend into Trude's underworld and confront the menacing and bizarre citizens of his hometown: rebellious librarians, shifty music critics, a cop called the Oracle, and the minister of an apocalyptic church who has recruited Norberg's teenage son. Faced with the loss of everything he loves, Norberg follows his investigation to the heart of the city and through the buildings of a possibly insane modernist architect called Bernhard, whose elaborate vision will offer him an astonishing revelation.