"This documentary questions twelve of the most important architects of our time as to their environmental efforts in practicing architecture. A trip around the world, from Japan to Brazil and passing through China, Italy, the UK and the US, to film their testimony and projects fitting within the sustainable development outlook. Twelve people, twelve contexts, and twelve perspectives. The planet is in danger. There is only one possible escape: the quick and energetic mastery of sustainable development. Its application to architecture and town planning concerns us all. What to do? Working differently in order to build differently and do everything in order to protect our vulnerable environment. Solar energy, renewable materials, targeted changes in city design, passive houses and bioclimatic architecture, are the many answers possible to define a highly topical issue."