A dreamy love story and a journey through the human brain as a thrilling zamonian adventure. Princess Dylia, who calls herself "Princess Insomnia," is the most sleepless princess in all of Zamonien. One night, she is visited by a nightmare-colored nightmarish creature. Havarius Opal, as the equally frightening and charming gnome introduces himself, announces his intention to drive the princess to madness. However, before that, he takes her on an adventurous journey through the world of thought and dreams, which holds new and surprising twists for both of them until they finally reach the dark heart of the night. Walter Moers tells this fairy tale from the zamonian late romanticism, filled with quirky characters and his unique humor: both exciting and touching at the same time.