Matthew and Mason are intrigued by the painting on their wall, and with the help of Amy, a girl in the picture, they enter the land behind the painting. What they find there is a dystopian world far different from the idyllic picture, where residents have chips in their heads and thought control is practiced. There is no Constitution and the laws are those imposed by the self-appointed rulers. The three must attempt to stop the tyrants before they are thrown into the Bloody Tower where dissidents are imprisoned, or, in the case of the boys, executed.