What is the setting of Inkdeath by Cornelia Funke?

The novel is set in the fictional world of Ombra, inside the novel Inkheart. This is a medieval fantasy world, where native characters serve the land as peasants or nobles. There also exist bands of robbers who either steal from people or, like the Black Prince, work in secret to defeat the Adderhead. Ombra has been taken over by the Adderhead and his evil forces from the Castle of Night, and though it is near enough for the characters to reach in a few days, it is never featured itself in this novel. Fairies, glass-men, and other creatures live in Ombra, and the characters encounter them very often.

A small portion of the novel takes place in the "real" world. This is our world, and two of the characters wish to leave it in order to enter the novel Inkheart. Our world is viewed as impossible and fantastic by the inhabitants of Ombra.