This paper analyses SSC as a transformative response to the prevailing climate governance approach from the Global North. From an Eco-Marxist perspective, the study critiques the Global North's epistemic stranglehold, which sidelines localized Indigenous and feminist knowledge, holistically considering the climate. This paper looks into the theory of reparations and demonstrates the lack of responsibility as empty accountability while revealing the captive relationships fostered by the North. The study demonstrates how SSC equips Southern states towards decolonial climate action in South Asia and Africa, framed within justice, equity, and universal epistemologies. This research advocates for grassroots empowerment where women and the Indigenous take charge while calling for the balance of local and transnational regional governance climate governance, creating unity windows. The study proposes a post-capitalist climate framework rooted in degrowth, ecological rights, and resilience, with SSC being the focal point towards climate justice and sustainability.