Andy Serkis is teasing more details about his upcoming expansion of the Lord of the Rings cinematic universe.

The famed British actor, known for roles in Lord of the Rings, Planet of the Apes and more recently, Andor, is directing The Lord of the Rings: The Hunt for Gollum, which boasts Peter Jackson as a producer as well as a star-studded cast that includes Anya Taylor-Joy, Kate Winslet, Jamie Dornan and Leo Woodall. Elijah Wood and Ian McKellen will be reprising their beloved roles as Frodo Baggins and Gandalf, respectively, from Jackson’s Oscar-winning trilogy.

Serkis talked to the BBC this week about what he has in store for the latest adaptation of Tolkien’s work, currently slated for release in December 2027. He began by explaining that the story “sits absolutely between The Hobbit and The Lord of the Rings trilogies, and books in fact.” He said: “It is very much a deep dive into the psychology and history of Gollum before he became Gollum, but also with a very burning question from Gandalf about what the potential origin of this ring that Bilbo Baggins has is.”

“The hunt takes place in two different dimensions really and that’s about as far as I can say at the moment,” he adds.