The IMDb info is this: 1 hour and 33 minutes of Dali time, rated at 4.3/10 by 563 ratings.
Long before Star Wars, the Italian cinema offered this title. Directed by Antonio Margheriti, who like others in the cast, used an Anglo pseudonym in the credits. In his case, it was Anthony Dawson. The aim was to sell the film into the American market, and along with the aliases, the director/producer recruited the Invisible Man Claude Rains for that purpose.
The set-up makes as much sense as some of the later Italian Sy Fy films. Z e r o.
Rains is a curmudgeon and at first I liked that but it went on and on and on. He lives in a palace by the seaside somewhere surrounded by bright young things. Easy to see why Rains liked the part for the three or four days he spent on it. Every one stands when he enters a room, and the bow their heads to him. Moreover the set abounds with sunshine, nubile and virile creatures coming and going, and no script to remember, just snarl.
Downstairs in his palace is a scientific establishment that by some unspecific means monitors the heavens. The fraternity brothers accomplish this with beer. How it is done in this seaside palace is less clear. Many bright scientists come and go; sometimes they enter Rains’s inner sanctum where they bow and hand him written reports in ring-binders. Furturistic, not. He looks disdainfully at their efforts, and in one case, while declaiming how useless the report is, an over the shoulder close-up shows he is holding it upside down. Well, it would not make much sense that way, would it. (Though I have tried that a few times with journal manuscripts I have had to review.)
He tells everyone how stupid they are repeatedly. He must be emeritus because he is never going to get another research grant with all the friends he is making.
Thanks to the Stockholm Syndrome, the more he abuses people. the more they think he is a genius. Why did not I try that in my career?
Then the Outsider, Planet X on loan from ‘The Man from Planet X,’ appears in the Solar System. Gulp! All eyes turn to Rains, who tells the eyes how stupid they are. See, he repeats the same line again and again. Easy to remember. He punctuates his castigations with cigar smoke.
High Command mobilises its Ferrari spaceships to blast Planet X. Rains tells them how stupid they are. Planet X will not collide with Earth, and only fools would think it would. However, it will pass so close that it will cause catastrophes of all sorts. This last fact does not bother Rains who is more interested in telling the others how stupid they are, while puffing away on his life-ending cigar.
Stock footage of catastrophes appears on cue. Floods, fires, short-order famines, hysterical people, GOP majorities, and stampeding animals, empty coffee cups and other signs of devastation. Rains tell everyone how stupid they are.
High Command sends the rockets to blast Planet X. Whoa! Flying saucers appear from the surface and blast the rockets. Game and set are lost. The Ferraris were a lot more show than go.
Rains tells everyone how stupid they are.
Planet X goes into orbit around Earth. Laws of physics go out the window. Whooska! Rains admits he had not foreseen this, but quickly recovers to tell everyone how stupid they are.
To prove his point he kneels on the floor and writes a few squiggles with chalk. High Command is so astounded that a man of seventy-two can kneel on the floor and get up that it gives in to his demands.
He claims as his own the discovery of an underling that the flying saucers go wobbly when hit with classical music. Phasers and atomic bombs have no effect, but a piano sonata does the trick. How much better it would have been had it been the Queen of the Night’s aria!
Rains tells everyone how stupid they are.
At seventy-two he takes rocket to Planet X, but at least this geriatric is not smoking a cigar in-flight. However he does tell everyone how stupid they are.
Sure enough the defending flying saucers go all dishy with the music allowing the Italians to land. Rains penetrates the interior to find THE TRUTH. Meanwhile, the landing party has started a giant doomsday bomb to blast Planet X into the void. (I held out hope this crescendo would be the Queen of the Night’s aria, but no.)
There are no inhabitants of Planet X and the flying saucers were automatons whose code was scrambled by the music. It seems an IOS update killed all the Xers long ago.
While telling everyone else how stupid they are, Rains ignores the calls to return to the rocket and leave before Kaboom. He stands around agape. Maybe he is wondering where his cigars are. No need because KABOOM! Now who is stupid?
The end.
That terse summary makes it sound better than it is. Watch at your own risk as they warn on CSPAN.