Freya, a penguin, and Zoose, a mouse, become friends while stowaways on Salomon August Andrée's 1897 hot air balloon expedition to the North Pole.

Archer's joy over the anticipated arrival of his long-lost grandparents are dampened by rumors that they are bringing a curse with them.

Doctor Silas Coade is tasked with keeping his crew safe as they adventure across the galaxy in search of a mysterious artifact.

After an explorer with a clockwork hand gives Kit West an old book from his father, he and his siblings must evade government agents while solving the puzzle their father sent.

On summer vacation in Scotland, the Thea sisters are intrigued by a tapestry that is really a treasure map supposedly leading to a hidden alabaster garden where an ancient treasure is buried, and the story of Aurora Beatrix Lane, an adventurous explorer mouse--and when the tapestry is stolen they set out to find the treasure using the explorer's diary as a guide.

Once again the mysterious box takes the golden retriever Ranger back in time, and he finds himself on a ship, the Terra Nova, headed for Antarctica, where his mission is to save Jack Nin, a stowaway from New Zealand, from the blizzards and other hazards that lie ahead for the doomed expedition.