Pig does everything he can to protect his town but nobody shows any gratitude. He trots tirelessly up and down the stairs, moving heavy levers and making sure the windmill keeps turning. This is the only way he can hold back the billowing black clouds of smoke which threaten to engulf everything. In between all of this, Pig rushes to school before hurrying back to the dam each day. The townspeople continue to ridicule and scoff at him, and he finds himself sitting alone in the back of the bus. Everything begins to change when Fox, a new classmate, joins Pig's class.