Sprig's story is loosely based on a real pig who leaped off a delivery truck and was lucky enough to end up in an animal sanctuary. The day we meet Sprig, he's on a truck jam-packed with pigs hurtling towards what he senses is a grim fate. Suddenly, the truck stops, and Sprig catches a whiff of something utterly delicious. He decides he must have it. And that is why, moments later, he finds himself taking a flying leap off the truck. The pig-centred adventure tale that follows takes a few surprise turns as our hero explores a scrumptious new world that includes rich forest-y smells, peanut butter and jelly sandwiches, and a girl named Rory.