in the isolated Piggy Island. you, the only human who is a caretaker, Alongside a flock of rare multi-colored birds, led by Red and containing the Blues (Jay, Jake and Jim), Chuck (yellow bird), Bomb (black bird) and Matilda (white bird), guarded a nest containing three eggs. However, from the distance watched the Bad Piggies, led by the greedy King Pig Smooth Cheeks. These pigs have been relegated to eat grass, and King Pig, who, unlike his ancestors, has never eaten eggs and needs to keep that fact a secret, has had enough. Meanwhile, Red witnessed a mosquito touch one of the eggs. Furious, Red tried to fight the mosquito, but it got away (though he managed to defeat it). King Pig saw his chance, and, along with other high-ranking pigs Corporal Pig and Foreman Pig, stole the eggs while Red wasn't looking. Red and his comrades spotted the empty nest, and screamed in shock. Red, along with Bomb and Matilda, mourned the loss of the eggs, while the Blues spotted footprints leading to the pigs, whom Chuck had spotted. Using a slingshot, the birds slung themselves towards structures made by Foreman Pig, and managed to defeat all three elites and get their eggs back.

Afterward, the pigs tried new ways to get the eggs. The birds meet more members of their species along the way (Hal (green bird) and Terence (the big red bird)), and the battle continues to places such as a forest, a desert, a mine, a beach, a laboratory, and more. By this point you knew that the birds and pigs were turned into bitter rivals.