Tim and the iceberg

On a sweltering beach day, fantastical tales narrated by his Grandpa of the frozen north pole pique Tim and his sense of adventure. So when Grandpa dozes under the hot summer sun, Tim sets sail in his toy boat to bring back an iceberg for his Grandpa! Along his journey, he befriends blue whales, polar bears, and a trustworthy seagull. But what happens when Tim turns south and the iceberg begins to melt?