The end is near for Game of Thrones with its final season set to air in 2019, but our break from Westeros will be short lived. HBO has officially ordered a prequel series pilot for the wildly popular show, and it’s set to be written by Jane Goldman.

Prior to the announcement, HBO had been considering up to five series to expand upon the Game of Thrones universe. Now that the selection has been made, HBO’s focus has narrowed and it couldn’t come at more opportune time. With Game of Thrones ending next year, the network was running out of time to have a follow-up series ready. 

Should the pilot be ordered as a complete series, Goldman will be the showrunner while creator George R.R. Martin will serve as executive producer. Game of Thrones’ executive producers Vince Gerardis and Daniel Zelman will return to produce the new series.

Here is the synopsis of the upcoming series:

Taking place thousands of years before the events of GAME OF THRONES, the series chronicles the world’s descent from the Golden Age of Heroes into its darkest hour. And only one thing is for sure: from the horrifying secrets of Westeros’s history to the true origin of the white walkers, the mysteries of the East to the Starks of legend… it’s not the story we think we know.

If it follows the timeline of Martin’s books, the prequel will take place 10,000 years before the events of Game of Thrones. Some of our favorite elements of the series will be explored in the prequel series, from the Starks to the origin of the White Walkers.

Beyond the announcement of the news, HBO didn’t delve into too much detail about the series. There’s no word yet as to when the pilot to be ready. Examining the timeline, it likely wouldn’t come until 2020 with Game of Thrones taking up the bulk of HBO’s attention next year.