Johannes is a free dog, a fast dog--such a fast dog! He lives in an urban park by the sea, and every day, he runs through the park, seeing all, missing nothing, and reporting what he sees to the park's three ancient Bison, the Keepers of the Equilibrium. But the Equilibrium has been disrupted. Mysterious rectangles are hypnotizing Johannes, the humans are erecting a mysterious new building, and an entirely new kind of animal has arrived in the park--and...

Up until now, middle school hasn't exactly been a joyride for Greg Heffley. So when the town threatens to close the crumbling building, he's not too broken up about it. But when Greg realizes this means he's going to be sent to a different school than his best friend, Rowley Jefferson, he changes his tune. Can Greg and his classmates save their school before it's shuttered for good? Or is this the start of a whole new chapter for Greg?