The PLASTIC FREE HEROES project provides an innovative learning offer that builds on plastic as a conceptual context for learning in order to enable students to develop 21st century skills. Particularly, a novel curriculum that employs and combines student-centered pedagogical methods will be developed to enable learners to engage with project-based learning activities (i.e. students device innovative reclining solutions or alternative materials to be used instead of plastic as well as advocacy and awareness raising campaigns to sensitize the community about this environmental issue) through which a deeper learning process will be facilitated leading to the cultivation of 21^st competences. The project will also develop a “teacher training programme” that will enable teachers to apply effectively the developed curriculum and the innovative pedagogies that include.