Dean Corso is a broker specializing in the trading of precious classics. He often provides important collection clues to wealthy bibliophiles. Corso was employed by New York millionaire Boris Balkan. Although this man has a large number of esoteric documents, he has always been fascinated by the rare book "The Ninth Gate". According to legend, this book originated from Satan and was rewritten by someone in the 17th century. There are only three books left in the world. The owner of one of the books sold the book to Balkan a few days before his suicide. Balkan asked Corso to find two other books for him at all costs. It is said that one of the other two books is owned by Fagus of Portugal and the other is collected by the French collector Kessler. Balkan wants to verify The authenticity of this book. Corso was ordered to visit Liana Telfer, a widow, and it was her husband who bought the book to Balkan before he died, and she hopes to find it back. Corso discussed a countermeasure with his friend Bernie, but Bernie died suddenly, which coincided with an illustration in the book in Balkan's hands.
After a few murders, Corso finally understood that this book contains an important clue to a mysterious spell, which will fascinate people, and will eventually make people use all means and do everything in order to find the bottom of the puzzle. He finally understood that the nine engraved illustrations in this book are clues to a mystery, and once this mystery is solved, Satan the Devil will be awakened, the gates of hell will also be opened, and some people are unscrupulously Look for the missing illustrations. Who is the messenger of the devil?
