Disa and her father are on a journey to a place behind the Black Castles – a long and dangerous journey!Now Disa has to find her sister and free her with the brimstone-buttercup.At the End of the World, Disa faces new challenges.The brimstone-buttercup gets so hot that she loses consciousness when she faces her mother‘s frozen trophies. Will Disa and the brimstone-buttercup be able to lift the curse?And will she overcome her mother‘s power?Disa in the Land of the Northern LightsDisa and the Hidden PeopleDisa‘s Battle