The annual lake games at two rival boarding schools are filled with hints of cheating, but the sudden arrival of a zeppelin crash forces the count to seek shelter in a hospice, plagued by financial woes. A distant cousin, Cuno, inherits the castle and agrees to sell it to a Chinese theme park group, Wang, who plan to merge the schools. Meanwhile, a group of five friends, led by Ottokar, embark on a treasure hunt to uncover a medieval treasure hidden during a papal siege and heretic persecution. Their quest takes them to the girls' school, Rosenfeld, where they must navigate nosy students and staff while trying to outmaneuver the Chinese delegation.
Shiverstone Castle 2
To rescue their treasured Castle Schreckenstein from being sold due to financial difficulties, the students of Castle Schreckenstein and Castle Rosenfels join forces to take decisive action.