In 2027, the world is in a state of chaos and despair due to an inexplicable infertility epidemic that has plagued humanity for over 18 years. The world's youngest person, an 18-year-old, has just died, and the news of his death sends shockwaves across the world. Amidst this backdrop of uncertainty and hopelessness, Theo Faron, a former activist who has become disillusioned with the world, is approached by his estranged wife Julian, who is now the leader of the Fishes, a militant anti-government organization.
Julian seeks Theo's help in securing transit papers for a young woman named Kee, who is mysteriously pregnant. Theo reluctantly agrees to help. He obtains the papers and accompanies Kee and Julian to the coast, where they plan to board a ship headed for the Human Project, a scientific group that claims to have found a cure for infertility and is working on restoring fertility to humanity.
Along the way, Theo, Kee, and Julian encounter various obstacles and dangers, including the treacherous paths through the woods, corrupt government officials, and army checkpoints. The trio is also pursued by the Fishes, who disagree with Julian's decision to take Kee to the Human Project instead of using her pregnancy as a political tool to fight the government.
Despite all the obstacles, Theo, Kee, and Julian successfully reach the ship, which is under attack by the Fishes. In the chaos of the attack, Theo is wounded but manages to find Kee and help her deliver her baby. The film ends with Theo holding the newborn baby as the fighting dies down, hinting at a potential hope for the future of humankind.
Children of Men is a thought-provoking, intense film that explores themes of hope, despair, and the resilience of humanity in the face of extreme adversity. The film boasts an all-star cast, including Clive Owen, Julianne Moore, and Chiwetel Ejiofor, and is directed by Alfonso Cuarón, who won an Academy Award for Best Director for his work on Gravity.