Born in the shadow of the Manhattan Project, two childhood friends find their bond fractured by the diverging moral and political currents of the Vietnam War era. Kip and Brice grow up in the insular, secretive environment of Los Alamos, where the legacy of the atomic bomb looms over their formative years. As they transition into adulthood, their paths diverge sharply: Brice engages in domestic antiwar activism, while Kip enters the military to serve in the clandestine conflicts of Southeast Asia. The narrative examines the long-term consequences of their shared history, particularly when a love triangle involving a woman named Jessica complicates their loyalties and Kip returns decades later to confront the past.

Critics have praised the novel for its ambitious scope and its ability to ground large-scale historical shifts in the intimate details of personal relationships. The Chicago Tribune highlighted the work as a remarkable feat, noting its dramatic realism and emotional resonance. The New York Times Book Review commended the author's focus on the complexities of moral decision-making, suggesting the narrative forces readers to confront their own ethical landscapes. The Boston Globe described the book as an astonishing record of a dangerous age, emphasizing its breadth and vision. These assessments collectively underscore the novel's success in balancing historical gravity with the nuances of human connection.