Yep, right from the start you think Starship Troopers. A past bug invasion that cost millions of human lives. We must be ready for them if they come back right?
Heck no! They started it, we're going to finish it. We're going to their planet to crush them!
Unfortunately our army, a bunch of teenagers, has been infiltrated by PETA. First, in the form of a bleeding heart psychiatrist played by Viola Davis, who thinks we are putting too much pressure on our teenage 'hero.' C'mon now, this is war; it's them or us.
Secondly our hero himself is PETA's secret weapon. Instead of wiping out the bugs, he empathises with them and does his best to see that they get another shot at us.
Who in the world thought that sane folk would feel sorry for bugs? I wanted to jump through the screen myself with some insecticide and an ice pick. Not to mention, a club to beat some sense into our 'hero' who chose bugs over a cute chick.