One brave little sea otter is on a quest to find the place where the sea meets the sky. But however far she travels, home is never far away. Sophie’s mum says that no one can reach the horizon, and no one should try. But Sophie reckons it doesn’t look that far! She sets off on an exciting journey, meeting all sorts of sea creatures on the way – walruses and whales, lobsters and starfish, and someone a little more dangerous.