What would happen if the famous war, one we most feared, atomic war, was finally triggered? If the bomb devastated the Earth, our planet today so green and so blue ...? Who would survive? Why and how? Merle attacks on brilliantly. The characters he chooses in the peaceful French countryside well so far, are facing a real test of survival in a world gone dry and burning, with the sole refuge the ramparts of a fortress. Believing himself the only survivors from the heroes of the story are quickly realizing that their nest is coveted by some people spared from the nearby village, by other beings survivors of the "event. "Societal problems come to the surface, indiscipline, lack of organization, fear, desire, envy, greed even in a world where money has no value where one is rich man who has enough to eat. In a gray and arid world of human beings who have lost everything, their brother, their mother, their child, can they still hope, build, move forward? The answer is yes for Merle again and again yes, but if in this novel he began to show us the strength of the instinct of human survival, it reminds us above all that life is fragile, and that our efforts and progress we have weakened even more. This book is, in my opinion, truly a masterpiece, to read and to read. The style is very clear, fluid, the characters are engaging and believable, and the course of history is surprising, captivating. No regrets.