Arthur has vanished, or so his family thinks. If they only knew that he is in the back garden, where he has been shrunk into the world of the Minimoys.
It is a world of danger and excitement, where Arthur, helped by the fiery Princess Selenia and her mischievous brother Betameche, has a difficult quest: he must rescue his grandfather, find lost treasure and save the kingdon of the Minimoys.
But the answer to his quest lies deep within the garden at Necropolis, a forbidden city ruled by the evil wizard Maltazard. And to reach it, Arthur must cross a vast world of fierce battles and terrible minsters. Will he ever return?
This is the second part of the Minimoys adventure, by the acclaimed writer and director Luc Besson. Both books are being made into a film, released in 2006.