A family man is one day abducted by the people in the future to be send as a reinforcements for the losing war in the future. He came back 16 years after on the day he was abducted and faces the life he left behind.

When a man returns after 16 years of time traveling, he struggles to change the present to avoid the terrible future he has seen for himself -- and all humanity.

[Note: the hook of the movie is time travel. If that future isn't the prime driver of both the plot and the character in the present, it's a throw away plot gimmick.]

When a family man reappears 16 years after being zapped into the future to take place in a galactic war, he struggles to readjust to his new surrounding and rebuild relationships with his ex-wife and his resentful children.

>>I think that the problem is that the back story is more intriguing than the front story.
>> you need to connect his current problems with what happen to him in the past and future.

I agree.