The islands of birds and green pigs are in a lazy skirmish mode, when they have a new enemy - Zeta, the leader of the inhabitants of the third, icy island. She is fed up with living in the permafrost, so the villain develops a cunning plan to take over the neighboring tropical islands. Birds and pigs unite against the sudden threat, while three fluffy chicks, playing on the shore, accidentally send three eggs into the ocean voyage.