For a flock of flightless birds, life has never been easy. After all, they’ve always had to contend with an annoying group of green pigs. But when the discovery of a new island is made, it suddenly becomes clear that the two groups will need to put aside their differences and work in harmony. But this, of course, is a lot more difficult than it might seem. With both of their own islands in peril, though, time is running out. And if they don’t work together, they may not survive separately.