All but one of the heroes in these 10 new stories previously starred in a popular book from Rick Riordan Presents. You'll be reunited with Aru Shah, Zane Obispo, Min the fox spirit, Sal and Gabi, Gum Baby, Nizhoni Begay, Paola Santiago, Sikander Aziz, and Riley Oh. Who is the new hero? Read Rick Riordan's short story to find out! Ten bestselling and award-winning middle grade authors contributed to this collection: Roshani Chokshi, J.C. Cervantes, Yoon Ha Lee, Carlos Hernandez, Kwame Mbalia, Rebecca Roanhorse, Tehlor Kay Mejia, Sarwat Chadda, Graci Kim, and Rick Riordan, who also served as the editor.