When twelve-year-old John Barr is forced to join the navy his life
takes a dangerous turn. As he trains to become a powder monkey on
board the mighty HMS Fearless, he soon learns that the ship hides
many secrets. Thrust into a sinister world of spies and covert
operations, John must go ashore accompanied by fellow shipmate Kit.
But when their mission goes awry, the friends are abandoned and
watch from the shore as the Fearless sail away. Can they now
survive behind enemy lines?