In an era where reality and fantasy intertwine in surprising ways, an enigmatic doctor, the owner of a strange traveling show, has made a deal with the devil. Parnassus, an elderly man who has lived for centuries due to his ability to tell stories and open doors to imaginary worlds, faces a race against time when his daughter Valentina is caught in the devil's obsession to possess her soul. In his quest to save Valentina, Doctor Parnassus encounters a stranger, a mysterious man who appears out of nowhere after a failed suicide attempt.
The new companion, Tony, not only brings an air of mystery with his dark past but is also the key to helping Parnassus in his mission. Together, they embark on a magical adventure within the Imaginarium, a portal that allows people to explore their deepest desires. Each entry into the alternate world alters reality and reveals the shadows that haunt both the characters and their hearts.
Amidst illusions and heartbreaking truths, a battle ensues not only for Valentina's soul but also for the redemption of those seeking a second chance. The film is a stunning visual journey that blends imagination with the struggle for love, challenging our perceptions of life, death, and what it truly means to be free. As the characters confront their own demons, the story invites the viewer to question the boundaries between reality and fantasy.