This flagship PISCES Policy Report translates years of interdisciplinary research into clear, actionable pathways for national change. Framed around Indonesia’s upcoming National Plan of Action (2026 onwards), it shows why fragmented interventions have struggled — and how a systems-based approach can unlock coordinated, equitable solutions. By integrating data, behaviour, governance and infrastructure, the report provides policymakers, industry and civil society with a practical roadmap for reducing plastic pollution while strengthening livelihoods and resilience.