Setting aside the "Overrated" and "Plagiarized" bias, you'll see a good movie.

Rating: 8/10 (22 November 2014)

Looking at the surrounding reviews you will see how this thinking apparently interferes with people's objective criticism of a perfectly good and technically superior film. They ignore so much.
Some fans of Japanese cinema have still been unable to forgive The Hunger Games' resemblance to Battle Royal. They miss out on the bevy of differences and the depth of the setting within The Hunger Games. However tantalizing the world within the movie may be, most reviewers are prone ignore Mockingjay Part 1's greatest strength: Lawrence.
No, not Jennifer Lawrence, though she still plays the part well (albiet a tad too heavy handed). The director Francis Lawrence does a grand job of utilizing visual storytelling and cleverly grafting it in with the plot. Also, this is one of the best edited movies this year, next to Interstellar and Edge of Tomorrow. The soundtrack is notable and Lawrence expertly uses and properly represents the power of music in Mockingjay Part 1.
Addressing the other common complaint - splitting the source material into two movies: Many condemning Part 1 as a shameless cash grab, they wearily buy a ticket and pout while maligning the talent, time, and money (yes, movies COST money) online by engaging in an aggressive campaign against this "overrated" and "plagiarized" series. This sort of pessimism will surely prevent anyone from enjoying the emotional effect of this story.
In conclusion, this middle movie will be viewed more fondly once it is part of a box set.