The United Nations Environment Assembly (UNEA), in March 2019, passed a resolution to “address marine plastic litter and microplastics” and called for the development of an international agreement on plastic pollution. This resolution recognized the urgency of the plastic pollution problem and the need for a comprehensive, coordinated global response. With an ongoing UN Treaty on Plastic Pollution, the theme of CESS 2023, International Cooperation for Creating a Circular Plastics Economy: The Backbone of UN Treaty on Plastic Pollution and Driving South Korea to Future Partnership, conveys the need for an international legally binding agreement by 2024, in these times of prolonged crisis of plastic production and pollution with the triple impacts: extreme climate change, nature loss, and pollution. Nevertheless, CESS will engage policymakers, businesses, experts, and the youth to discuss how international cooperation for creating a circular plastics economy can achieve the global goal of limiting warming by 1.5 degrees, boost economic opportunity by reducing waste, stimulating innovation, and creating employment, and present sustainable planet.