Build a movie plot around this: Who explains that the people of the other planets have safety concerns? Mr. Wu
An extraterrestrial flying saucer is tracked streaking about the Earth until it gently lands on the President's Park Ellipse in Washington, D.C. Klaatu (Michael Rennie) emerges, announcing that he has come from outer space on a goodwill mission. Upon opening a small, suspicious-looking device, he is wounded by a nervous soldier and the device is destroyed. In response, Gort, a large humanoid robot emerges from the ship and disintegrates all weapons present with a ray emanating from his head, without harming the soldiers. Klaatu orders him to stop and explains that the ruined object was a viewing device, a gift for the President.Klaatu is taken to an army hospital, where he is found to be physically human-like, but stuns the doctors with the quickness of his healing. Meanwhile the military attempts to enter Klaatu's ship, but finds it impregnable. Gort stands by, mute and unmoving.Klaatu reveals to the President's secretary, Harley (Frank Conroy), that he bears a message so momentous and urgent that it can and must be revealed to all the world's leaders simultaneously. However Harley tells him that it would be impossible to get the squabbling world leaders to agree to meet. Klaatu wants to get to know the ordinary people. Harley forbids it and leaves Klaatu locked up under guard.Klaatu escapes and lodges at a boarding house, assuming the alias "Mr. Carpenter". Among the residents are Helen Benson (Patricia Neal), a World War II widow, and her son Bobby (Billy Gray). At breakfast the next morning, during alarming radio reports, Klaatu takes in the unknowing fellow boarders' suspicions and speculations about the purpose of the alien's visit.While Helen and her boyfriend Tom Stephens (Hugh Marlowe) go on a day trip, Klaatu babysits Bobby. The boy takes Klaatu on a tour of the city, including a visit to his father's grave in Arlington National Cemetery, where Klaatu is dismayed to learn that most of those buried there were killed in wars. The two visit the heavily guarded spaceship and the Lincoln Memorial....