After moving into their new home, a keeling-over farmhouse in the country, nine-year-old Cyrus and his brother, Rudy, have trouble adjusting to all the changes. The fresh-from-the-farm egg yolks are blindingly yellow. The eccentric girl next door has a very unusual sense of style. And Rumpley, a donkey they inherited with the farmhouse, doesn't even know how to bray. Nothing about the country feels warm or familiar. But when Cyrus is stranded one evening by the tide, he finds his lifeline in an unlikely companion.