Spanning Marx’s early philosophical writings to his mature critique of political economy, Fantastic Abstraction provides a rigorous introduction to Marx’s critical conception of ideology. Organised around the thematic development traced across its chapters—from the evolution of the concept to the social production of consciousness and the dialectics of determinism—the study shows how Marx transforms debates inherited from Hegelian idealism, Feuerbach’s materialism, and Enlightenment accounts of ideas into a distinctive critique of how social reality misrepresents itself. The book argues that Marx conceives ideology not as a system of ideas or subjective errors but as a necessary misrepresentation generated by distorted social relations. Chapters such as Turning Hegel on His Head explain how Marx relocates inversion from thought into material reality: ideas deceive because social life is already inverted. Ideology therefore cannot be dissolved by rational argument alone; it endures as long as alienated social structures persist. Engaging closely with key texts, the study clarifies Marx’s distinction between subjective and objective ideology, his broad view of the base–superstructure relation, and his account of consciousness as socially produced through cooperation and practical activity. Later chapters trace how his method becomes increasingly historical and sociological, culminating in the critique of political economy and a conception of revolutionary-critical praxis aimed at overcoming distorted social reality.