The Malayalam-language science fiction mockumentary Gaganachari interferes with the modern ecocritical discourse by revealing urban denial the ideological notion that technological advancement will envelop human communities against ecological disaster. The film, which is set in a climate-stricken future, redefines the urban areas of Kerala as precarious areas characterized by the infrastructural instability, the lack of resources and ecological blindness. With the background of urban ecocriticism and the Anthropocene theory, Gaganachari reveals the critique of anthropocentric development, and this paper explores this aspect in terms of submerged landscapes, weakening infrastructure, rationed resources, and socially disintegrated by climate consequences. Its mockumentary structure destroys the distinction between imaginative futures and current realities and turns satire into a practice of ecological witnessing. The alien figures at the core of this criticism are posthuman observers and displaced subjects of the ecology that disrupt human exceptionalism and bear histories of extraction and depletion of the planet. Instead of providing redemption, the movie is the sequential story of rejection and exploitation, which ultimately shapes the urban modernity as unsustainable ecologically and morally in the Anthropocene.