sentences:  When they save a stranger from the wolves that are running wild in the area, only to discover he is a relative, Is takes on the task of continuing the man's search for his missing son Arun.She travels into London to consult with old friends, and there meets the king of England, Richard, who also asks her to look for his own missing son David.Is's investigations lead her to 'The Playland Express', a secret train spiriting children away from London and north into the part of the country that has recently split off and become autonomous.