Kwame crashes the underworld

"Twelve-year-old Kwame Powell isn't ready to deal with losing his grandmother, even as he and his family head to Ghana for her celebration of life. He's definitely not ready when he's sucked into a magical whirlpool that leads straight to Asamando, the Ghanaian underworld. There, he comes face-to-face with his grandmother, who is very much alive, and somehow just . . . a kid? Together with his best friend, Autumn, and a chattery aboatia named Woo, Kwame sets off to battle angry nature gods and stop the underworld from destroying the land of the living. But there's an even bigger problem: living souls can't stay in Asamando for long. In order to save the mortal world and return home, Kwame must find the courage to do the bravest thing of all--learn how to say goodbye"--Provided by publisher.