Die Abenteuer der Kruselings werden in einer Reihe von Büchern des beliebten Kinderbuchautors Boris Pfeiffer erzählt. Im zweiten Buch werden Luna, Vera, Sofia, Joy und Chloe von den Tieren des Traumlandes um Hilfe gebeten. Sie sind in eine dunkle Schlucht gestürzt und niemand weiß, was dort vor sich geht. Die Kruselings starten ihr zweites Abenteuer im Traumland.

n a dream Luna sees brightly colored hearts flying up from a fire. Then suddenly in the middle of the night she is awakened by a tapping on her window pane. It is a golden heart. The heart leads Luna off to the Land of Dreams, where she learns she is one of the Kruselings. And there is more! Dreamland is in danger. Night after night Rubbish Monsters have been emerging from the Sea of Dreams, creating havoc all over the land. To save Dreamland the Kruselings must find out who is having these nightmares. The Kruselings are the Guardians of Dreams. With their Magic powers and help from their animal friends, they keep Dreamland safe from bad dreams.