Moebius (1996) is the first cinematographic production of the “Universidad del Cine” of Buenos Aires. It is the collective project of forty-five film students under the general direction of Gustavo Mosquera. The film narrates the mysterious disappearance of a subway train along the last addition to its underground network: the “línea perimetral.” In search for answers, a topologist named Daniel Pratt initiates an allegorical journey into Moebius, a subway trajectory that is timeless but includes all times. This article explores the role of Moebius' subway as a metaphor to understand the urban. Drawing from Buenos Aires' urban history this filmic analysis ties the Subte to Buenos Aires' processes of capital accumulation and unveils the fissures of its modern spaces.