Samuel Orzabal and the Keys of the Past

When Samuel Orzabal celebrates his birthday, he is given an old envelope and is told it is from his long-deceased uncle Rufus who requested that it be given to Sam on his fifteenth birthday. The envelope reads 'Open in Private' - It includes a map, two keys and a letter. Sam discovers that his dear old uncle was working on a mysterious project before he died - a project he wants Sam to complete. Sam finds out his Uncle Rufus was a genius inventor and created some extraordinary machines - one turns ordinary rocks into gold, another can transport him to an alternative dimension. What is the plight of this other world and why is it so important Sam connect with them? Sam knows he will need the help of his two best friends, Sean and Curt to continue this quest.