It is almost officially considered the worst Japanese film in history. In fact, in Japan it went like a mini-series, and then someone clever decided to sell out of all this film and put in the American rental.
A UFO has landed. Standard situation for 50s cinema. In UFOs sit some nosey citizens who offer the population of the Earth to obey, because the nosey clearly superior in technology and scientific knowledge. But secretly, on Earth, under the guise of a simple shoe cleaner in Tokyo, lives a space prince. A prince cannot be killed by an alien weapon.
A Japanese version of Superman. A prince defeats a UFO and then flies to the planet of the nosey when they kidnap a group of prominent earth scientists.
Can Superman and the other Avengers be classified as science fiction? Technically, yes. Frankenstein films are considered science fiction. Well, yes, but it's science fiction for kids. If you look at it, the movie is not very bad. Here, for example, good scenery of the planet nosey inhabited by a giant. In general, this is a naive, children's film from which you should not demand much.
2 out of 10