Young environmental activist Sarah has been committed to a better world for years but now she is questioning her activism. Why is far too little still happening? What can she, one person really achieve? Can climate change still be stopped? She takes these and many other questions with her onto a train where she travels across Europe to go and meet young activists who are successfully campaigning for projects in their countries. Even during the pandemic, there is a glimmer of hope, and for every problem a solution.