Paul is an ordinary man who divides his life between his shipbuilding company, his wife Elise, and their daughter Mia. During a sea trip, Paul encounters a strange and inexplicable meteorological phenomenon. From that moment on, Paul begins to shrink inexorably, with science unable to explain why or to help him. When he accidentally becomes trapped in his own basement, and while he is only a few centimeters tall, he will have to fight to survive in this mundane environment that has become dangerous. During this experience, Paul will confront himself, his humanity, and will try to answer the great questions of existence.