Return to Basgiath War College in this companion collection set in Rebecca Yarros’s bestselling Empyrean world. Thirteen stories follow beloved characters and their dragons on the legendary day that changes every rider’s life: the moment they are chosen to bond. Featuring Xaden Riorson, Brennan Sorrengail, Sloane Mairi and more, Threshing Day is a thrilling return to the world of Fourth Wing, where there is only one rule: do not die.