After his failed attempt to escape from Furnace Penitentiary, Alex struggles to survive the bloodstained laboratories beneath where monsters are manufactured, with a death sentence--or worse--hanging over his head.

After achieving the impossible by escaping the laboratories and cells of Furnace Penitentiary, Alex, injected with superhuman abilities, must uncover the last of Furnace's secrets--the truth about the man who built the prison.

"To defend themselves, a ragtag group of teens bands together at an abandoned amusement park after one day when, without warning, the entire human race turns against them"-- Provided by publisher.