In the middle of writing Harry Potter novels, J.K. Rowling began work on a new book called The Ickabog, which she read to her children in installments as a bedtime story and planned to release once Harry Potter was behind her. Instead, she ended up taking a well-earned hiatus from publishing children’s books that lasted more than a decade.

Today, however, Rowling announced that not only will she publish The Ickabog, but she’s doing it for free as a serialized novel online. The first two chapters have already been posted on The Ickabog website, and you can look forward to a new section each weekday between now and July 10, 2020. The story, which isn’t related to Harry Potter or the Wizarding World, takes place in the fictional kingdom of Cornucopia, where King Fred the Fearless rules with his best friends, Lords Spittleworth and Flapoon, by his side. There, a young boy named Bert Beamish is terrified by the legend of the Ickabog, a mysterious, malevolent creature that allegedly snatches up unsuspecting children all over the countryside. According to Rowling, the story is about “truth and the abuse of power,” and it’s best suited for children up to age 9.

This November, the book will be published in print, e-book, and audiobook formats, and Rowling will donate all author royalties to as-yet-unspecified “groups who’ve been particularly impacted by the pandemic.” She’s also asking readers to enter their illustrations of the story in a competition for a chance to be featured in the print edition this fall. Suggestions of what images the publishers might need for each chapter are listed on the website—the first two chapters, for example, call for pictures of King Fred and his friends, the Ickabog, a map and flag of Cornucopia, Lady Eslanda, and pastries, cheese, sausages, and wine—but it’s made clear that “nobody should feel constrained by these ideas.”

You can find out more about The Ickabog, read the story, and enter the illustration competition here.