A marine with PTSD struggles to find answers to his unsettling dreams and nightmares until he discovers his nightmares are repressed memories and that he is a sole survivor sent into the future to warn Earth. Title: ETSD.

Yep, it's an interesting set up for a plot. ?But what's the plot that follows from his realization?

And wouldn't it be the case that he's been sent from the future into the past to warn of a catastrophe to come?

Yep, it's an interesting set up for a plot. ?But what's the plot that follows from his realization?

And wouldn't it be the case that he's been sent from the future into the past to warn of a catastrophe to come?

This seems more like a set up to a story.

"When a marine with PTSD discovers his nightmares are really memories from the future, he must find a way to warn earth of the impending (Comet? War? Virus?) that will soon destroy the earth.