The novel follows the life of Per Sidenius, a young man from a devoutly religious family, who rebels against his provincial upbringing to seek fortune and success as an engineer in the bustling world of Copenhagen. Ambitious and driven, Per dreams of freeing Denmark from its reliance on foreign energy through his innovative engineering projects. Throughout his journey, he confronts the rigid class structures of Danish society, engages in tumultuous relationships, and struggles with his own internal conflicts and existential doubts. Despite his initial rapid ascent, Per ultimately faces the consequences of his relentless pursuit of material success, leading him to reevaluate the true meaning of fulfillment and happiness in life.

The novel is a coming-of-age story set in post-war Denmark, focusing on the intense friendship and emotional turmoil of two teenage boys, Janus and Tore. As they navigate the complexities of adolescence, their bond is tested by the allure of new relationships, societal expectations, and the struggles with their own identities. The narrative delves into themes of innocence, sexuality, and rebellion, painting a vivid portrait of youth caught between the innocence of childhood and the responsibilities of adulthood. Through the boys' experiences, the book explores the bittersweet transition into maturity and the chronic innocence that lingers amidst the harsh realities of growing up.

The book is a poignant exploration of childhood and adolescence set in a working-class neighborhood of Copenhagen during the 1930s. Through the eyes of a young girl, the narrative delves into themes of poverty, aspiration, and the struggles of familial relationships. The protagonist's journey is marked by her deep reflections on her surroundings and the complex dynamics of the adult world she observes. Her experiences are portrayed with a blend of innocence and emerging awareness, capturing the essence of growing up in a challenging environment.