High-spirited Ivy believes she can talk to animals, while Nathaniel, a boarding-school boy, is obsessed with animal facts. They come together unexpectedly on a cold English beach with the arrival of a rare and wondrous sea creature: a giant leatherback turtle who lays her eggs in front of the world’s media. Soon they’re on a mission to make a difference to the world - even if they have to do it one animal at a time.