When Fluttershy guides a group of frogs back to Froggy Bottom Bog, she gets hit by a red roundish bird that falls back into a bottomless pit - from where it came from. She decides to follow it and wakes up on an island inhabited by birds and pigs.

There she is both fascinated and shocked to learn that both species are in a war: the pigs attempting to steal three eggs from the birds, with the flock up to defending it with their lives.

With no end in sight, will she be able to stop it or make the situation worse than it seems?