What is the plot of the movie Angry Birds?

Red, who can't get past the daily annoyances of life, is the lone flightless bird who leads a mostly happy existence. His temperament leads him to anger management class where he meets Chuck and Bomb. When green pigs are welcomed to their island paradise, Red becomes even more angry. As the swine begin to get under his skin, Red joined forces with Chuck and Bomb to investigate the real reason for their mysterious arrival.