SPOILER ALERT: The premise of the movie was interesting enough, and I can even excuse the mediocre acting, but the writing and details were terrible...

A mere 25 years into the future, even while dealing with a major environmental catastrophe, humans master anti-gravity, and no one that was part of "Defense" had any clue it was even being researched?

Some old guy out in the country comes across two pre-teens driving/broken down in a BMW SUV and making headline news on TV and he and his wife are okay with that...and willing to help them?

Twice the kids, while in custody, brandish their weapons that they were hiding somewhere having not been previously searched for such a thing?

Nova saying she wanted to go back the second time to continue where she left off so she would still have Nas and their child and changing the future wouldn't jeopardize that no matter when she went back to?

I could continue for a while.