Ann and Gero, a pair of young lovers, find themselves journeying across Europe when their vehicle unexpectedly fails in the Eifel mountains. They encounter Vinzent and Franz, who extend an invitation to join them for a relaxed weekend of festivities at a secluded vacation cabin. However, following a lighthearted ‘séance,’ the couple’s cheerful spirits quickly turn to discomfort as bizarre events begin to unfold with unsettling frequency.