Finn has been raised to fear the notorious Ironclads and their city, Engn. The Ironclads are sent out to the surrounding villages to recruit children to work in the city.
When the Ironclads come, there is no choice but to send the children to Engn even though few return to their homes, parents are required to let the Ironclads take what they want.
When Finn was younger, his sister was taken to Engn which was supposed to mean that Finn was safe as the Ironclads can only take one child per family. But when the Ironclads come for him, this changes everything.
With Finn on his way to Engn and almost certain death, he is reminded of a promise he made long ago–Finn and his friend Conner vowed to destroy Engn for good.
But Finn soon discovers that task is larger than originally thought. In Engn, a dictatorship runs the city and the people/workers are slaves…broken and beaten to an inch of their lives and once they are no longer useful, they are terminated.

Kelsey Hayes has just arrived home in Oregon from her adventure packed and emotional summer abroad in India.
For recent high school graduate, Kelsey Hayes, the summer is all about finding a job so she can start community college in the fall.
The Infernal Devices are without pity.