Thirteen

Avery, Kate, Tuck, and Kendrick take charge of an underground network of kidnapped children, inspiring them to believe that their pasts do not dictate their futures and pledging to do the hardest thing of all...reunite the children with the homes they left behind. When they discover that one among them might be the child of a man who wants them dead, will everything they are working for be lost?

Much is at stake while the kingdom enjoys the greatest games on Earth. The castle is buzzing with excitement as preparations begin for the upcoming Olympiad. Everyone knows the queen is still on the hunt for the king's rightful heir, and kids begin mysteriously disappearing from the castle. When Avery learns that a male runner is needed for an important race in the Olympiad, she volunteers so she can get close to the action.

The king is very ill and in a hurry to hand over his power to a new generation when rumors begin to circulate through the kingdom. It appears the king is unaware of the queen's sinister plot against the 13-year-old orphans, as she wants to ensure her child becomes rightful heir to the throne. Avery weighs the pros and cons of seeking an audience with the king while the castle is dealt a heavy blow; but Avery decides the risk is worth taking.