Best-selling author Rick Riordan presents ten new stories—including one of his own—about beloved heroes that sprang from the imaginations of some of the best middle grade authors working today. "I hope you enjoy your trip through the multiverse mansion as much as I did. The real danger is that once you start exploring all the wonders herein, you may want to stay forever."—Rick Riordan A cave monster . . . an abandoned demon . . . a ghost who wants to erase history . . . a killer commandant . . . These are just some of the challenges confronting the young heroes in this highly entertaining anthology. All but one of the heroes 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. The cultures represented by these own-voices stories are: Indian, Mesoamerican, Korean, Cuban, Black American, African, Navajo, Mexican, Mesopotamian, and Celtic. There's something for everyone in this collection of fast-paced and funny adventure stories that show what it takes to be a hero in any time, setting, and universe. Read more about the heroes in these best-selling books: Rick Riordan Presents: Aru Shah and the End of Time by Roshani Chokshi Rick Riordan Presents: The Storm Runner by J.C. Cervantes Rick Riordan Presents: Dragon Pearl by Yoon Ha Lee Rick Riordan Presents: Sal and Gabi Break the Universe by Carlos Hernandez Rick Riordan Presents: Tristan Strong Punches a Hole in the Sky by Kwame Mbalia Rick Riordan Presents: Race to the Sun by Rebecca Roanhorse Rick Riordan Presents: Paola Santiago and the River of Tears by Tehlor Kay Mejia Rick Riordan Presents: City of the Plague God by Sarwat Chadda Rick Riordan Presents: The Last Fallen Star by Graci Kim