The introduction establishes the theoretical positioning of the book, concisely outlining the perspective through which the concept of immobility will be examined in greater depth throughout the subsequent chapters. Following a detailed explanation of the rationale for a theoretical and practical focus on immobility within the fields of urban studies and planning, the chapter proceeds to present the overall structure of the book. In doing so, it directly engages with four key issues central to the analysis of immobility, which must be addressed to explore its social and spatial implications. These issues will be further scrutinized through theoretical and empirical investigation in the following chapters. In its conclusion, the introduction provides an overview of the potential impacts of a more comprehensive understanding of immobility and its socio-spatial implications, both at the scientific and practical levels, as well as within broader societal contexts.