Build a movie plot around this: How long ago did the Krell die out? 200,000 years
A:
In the 23rd century, Starship C-57D reaches the distant planet Altair IV to determine the fate of a 20-year-old expedition. Dr. Edward Morbius (Walter Pidgeon), one of the expedition's scientists, contacts the Earth ship. He states no assistance is required, warning the starship not to land; he cannot guarantee their safety. Commander John Adams (Leslie Nielsen) insists on landing co-ordinates.Adams, Lieutenant Jerry Farman (Jack Kelly), and Lieutenant "Doc" Ostrow (Warren Stevens) are met by Robby the Robot, who transports them to Morbius' residence. There, Morbius claims that an unknown "planetary force" killed nearly everyone and finally vaporized their starship, the Bellerophon, as the last survivors tried to lift off. Only Morbius, his wife (who later died of natural causes) and their daughter Altaira (Anne Francis) were somehow immune. Morbius fears that the Earthmen are in danger, and (silently) that Altaira is intrigued by them.The next day, Adams finds Farman educating Altaira on kissing; furious, he dismisses Farman and berates Altaira for her naivety and revealing clothes. Altaira is frustrated, but designs a new, more conservative dress to please Adams. That night, an invisible intruder sabotages equipment aboard the starship. Adams and Ostrow go to confront Morbius the following morning. Waiting for Morbius to exit his study, Adams steps outside, only to encounter Altaira wearing her new dress. Adams sincerely apologizes and Altaira notes that she tailored her dress for him. Realizing mutual affection, they kiss.Upon Morbius' appearance, Adams and Ostrow learn he has been studying the Krell, a highly advanced native race that mysteriously died out suddenly 200,000 years before. In a Krell laboratory Morbius shows them the "plastic educator", a device capable of measuring and enhancing intellectual capacity. When Morbius first used it, he barely survived, but discovered his intellect had been permanently doubled. This enabled him to build Robby and the other "technological marvels" of his home...