The beautiful resourceful forest has always been the paradise of cute birds. They are leading a happy life there. Yet one day the crude pigs attacked the forest and build houses of their own. They transport blocks, glasses and woods to build a great variety of houses and comfortably stayed in, ignoring the anger of the cute birds. The cute birds are taking revenue now! They gather the most powerful birds in the forest, using their strength and power to shoot down the pigs' houses and kill all the pigs!