Gloria Ruckhauser has a dream: rediscovering the figure and features of herself when she was 20. Convinced that science is getting nowhere in the search for a cure to the aging process, Gloria sets up a foundation whose mission is to find a miracle potion. Various scientists take up the challenge and develop a substance that reverses the biological clock. Now, they face a new challenge. How to stop getting younger before it's too late.

When a group of people from different walks of life converge in a Hungarian castle situated in Budapest which has been sealed for 500 years, they bring with them a werewolf which slowly begins to cut their numbers down.