Gryllus is our hero. He is a pig. Well, not strictly speaking a pig. He's a man who got turned into a pig. More specifically, he was one of Odysseus's crew. The whole crew got turned into pigs by Circe, a witch, but Gryllus never got turned back. So... he is a pig who can talk, which, as you can imagine, causes a bit of a stir in Ancient Greece. Anyway... two of the gods have had a bet, the world as we know it is in danger and the only one who can save everyone is a smarty-pants talking pig. Oh dear...