Based on the mysterious legend of Idilia Dubb. Germany, 19th century, in the Middle Rhine Valley. 17-year-old Idilia (Lea van Acken) wakes up badly injured in the middle of a gloomy castle ruin and can remember nothing. She is horrified to discover that there seems to be no escape for her. Only her diary can help her decipher her past and reveals a secret romance with Caven (Eric Kabongo), an Abyssinian showman who has to work for Idilia's fiancé Franz Hagerberg (André M. Hennicke) at his human zoo exhibition. The young woman's struggle for survival and her slowly returning memory blur reality and fantasy.