Foaly never actually pulled location surveillance on Artemis, and when he goes into the one area monitored by neither humans, nor fairies, he can't help but be suspicious. Holly just wants to know how they missed this. Sequel to 'A Heart Forged in Steel'.
In the fight with the troll, Butler loses more than is easily replaceable. In an attempt to remedy this, Artemis takes the bodyguard to Amestris, the world's main manufacturer of automail. There, they go to the best known makers of automail - the Rockbells - only to find that there is already a patient in surgery: Edward Elric.