This movie has the weakest plot ever

"Genetically damaged", hahaha. We're the pure, and we must mind control and experiment on those who are damaged, just because. Just because I'm a bad guy. I'm a bad guy, just because.

I liked Divergent. Insurgent was alright. This one just made me cringe all the way through. What a horrible conclusion to the whole divergent/faction part of the story. Is it even worth seeing the next movie?