Two years after the phenomenal success of the documentary Demain (Tomorrow), Cyril Dion looks back at the initiatives that the documentary has inspired. He takes with him his friend Laure Noualhat, a renowned ecological investigator and very sceptical about the ability of micro initiatives to have a real impact in the face of climate change. Their humorous confrontation pushes them to their limits: what works, what fails? What if, in the end, all this forces us to invent a new story for humanity?