Trying to make a sci-fi story

Any ideas can help develop my main story?
It's a about device that makes time rifts and teleportation for a specific area, it's been distributed to certain people to use for a certain cause, a war is coming perhaps!
So what do you think guys?

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hartfire

Try reading some of Orson Scott-Card's books in the series starting with [i]The Speaker for the Dead[/i]. His time machine is an "ansible."

Have a look at what the science of quantum physics says about black holes, dark matter, dark energy and the theory of alternative parallel universes. String Theory and the Universal Field Theory also suggest rich possibilities. These could provide imaginative clues.
The best science fiction is based on threads of plausibility by working from what is already known by science or posited as scientific theory.
It asks, "if this was possible, what would happen as a result of human nature?"