Recess Is a Jungle! — Jack Chabert

Sam, Antonio, and Lucy are passing around a soccer ball at recess when something strange happens... They soon find themselves in a fog-filled jungle! The grass and trees have come alive, growing high into the sky. And the friends discover that it's not just the school itself that's alive -- it's everything on the school grounds! Sam, Antonio, and Lucy must find their way out of a monstrous hedge maze in time to rescue the rest of the students!