After an explosion, a marine wakes up in a place with other people from different times, his mission is to lead the group to recover artifacts spread in different times in history and avoid an alien invasion in the future.

"To avoid an invasion in the future, a marine is tasked by a mysterious entity to recover hidden alien artifacts in the past.

After reading this logline, I was blown away -- pun intended. There seems to be a lot more than a 90 minute movie can cover. It has a Lost feel to it with aliens thrown in the mix. I personally think you should go the TV series route, because based on this logline, you'll have plenty of characters, time periods, the 1st explosion, etc.to develop.

To avoid an invasion in the future, a marine is tasked by a mysterious entity to recover hidden alien artifacts spread through the past.?

Hope that helps, good luck with this!