The immortal Dr. Parnassus and his daughter Valentina travel the countryside with his imaginarium show, a mirror that audience members enter and are given two different paths to follow. If they choose correctly they will find joy and happiness, but choose wrongly and things will be quite the opposite. The doctor must also discover the right course to follow. After making a deal with Mr. Nick years ago, he must choose the correct path if he is to save his beloved daughter from Satan.