"Mac and Vince have gotten out of their middle school underworld crime business, but an upstart rival business and a run-in with an old nemesis pull them back in"--Provided by publisher.

When Artemis learns that his father has been kidnapped by the Russian mob, he races to the Arctic Circle to make a daring rescue where he finds an old acquaintance, Captain Holly Short, who is investigating a plot of the goblin mob.

Artemis is at boarding school in Ireland when he receives an urgent video e-mail from Russia. In it is a plea from a man who has been kidnapped by the Russian Mafiya -- a man Artemis had thought he would never see again: his beloved father. As Artemis rushes to his rescue, he is stopped by a familiar nemesis, Captain Holly Short of the LEPrecon fairy police. But this time, instead of battling the fairies, he is going to have to join forces with them...