The Letter: A message for our Earth, tells the story about the Pope's call to care for our planet. In 2015, Pope Francis wrote Laudato Si', a letter to every single person in the world, confronting the looming calamity of human impact on Earth and ourselves. It is one of the most ambitious and revolutionary papal statements in history, since it is directed not just to Catholics, but to everyone on the planet and it outlines the most critical environmental and social issues that we collectively face. There are four 'voices' that Pope Francis calls specifically for in Laudato Si': the Voice of the Poor, the Indigenous, the Youth and Wildlife. Voices that are too often not listened to in today's world. We witness a series of letters exit the Vatican, travelling across the globe, to Senegal, Brazil, India and Hawaii. These are invitations to five remarkable human beings to an unprecedented dialogue with the Pope. A dialogue where we become caretakers of this planet we call home.