Avoids a LOT of science-fiction movie and television chiches.
• They travel to the future and deduce that a major catastrophe has occurred.
Any other sci-fi story would say.
"remember that fatal virus, plague, disease, etc. scientists in the 1940's always warned us about?"
OR "I noticed in the cemetery that a large number of fatalities occurred in the 1970's. I guess Earth had that big nuclear war everyone always worried about."
Nope none of that. They arrive in the year 2300. (I forget the exact date and the precise catastrophe).
• They have to fight the mutants and their evil leader Naga. Any other story would have the new guys build some advanced, high tech, phase shifting amplitude dimension destroyer, which kills the surface dwellers, - ALL with one shot. Instead, the new guys successfully devise a bazooka!! (Even to 1950's viewers of the movie this was "old technology").
• The ending - don't worry - no "spoilers" here.
Other stories? "Hey captain remember that experimental time machine we were carrying back to Earth on board our space ship? Maybe we could use that to get back to our own time and meet everybody we knew and warn them of the 23rd century catastrophe." OR (equally hokey) "Wow these scientists are just a week away from building a time machine."
Not the happiest of endings but a happy ending of sorts (and no cliches). The Earth is at peace once again. Although Christopher Dark won't ever get back to his family, he seems interested in rebuilding a new Earth, etc.
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This is a great movie!!!