Warner Bros. is launching development of a movie franchise based on the sci-fi series “Dragonriders of Pern.”

The studio has optioned the 22-volume book series from the estate of American-Irish author Anne McCaffrey, who died in 2011.

It has yet to set up the project with a producer.

The books are set in a pre-industrial society with intelligent firebreathing dragons and their riders teaming to fight a rogue planet that attacks the world of Pern. The books take place over a period of over 2,500 years.

Drew Crevello and Julia Spiro are overseeing for the studio, which has launched the “Harry Potter,” “Lord of the Rings” and “Hobbit” franchises.

News was first reported by Variety sister site Deadline Hollywood.