After Greg Heffley's school declares a snow break, their street turns into a sleazy battlefield. Local snowmen build huge snow castles and fight each other in incredible snow battles. And in it all, the main columnist is Greg Heffley and his best friend, Rowley Jefferson.

Greg and Rowley's attention can never wane, as they cannot tell who is friend and who is foe in this frozen war. Do they live on the back of the ice? Or do they catch a cold?