Felicia Said:

does the plot to my creative writing story sound bonkers?

We Answered:

the description is a little vague. is "ending the war" coming to a peaceful resolve, or eliminating the opponent? Why did the war start in the first place? who are the opposing sides? why was "The girl in the future" captured? wow did she escape? is she was do young, why was she in prison, how could she escape and why was a child captured and murdered?

i don't know the quality of you're writing, or you're writing style, so i cant say if it would be good for sure. no-one can do that with any story. but in the right hands, and with those questions answered, it could be great!