A water pipe bursts in a wall in Matt's room and to Lizzie's horror she'll have to share her room with her brother until the repairs are done. That doesn't look like it will be anytime soon, as the McGuires have hired a repairman who could have come straight out of the movie The Money Pit. Predictably, the pairing of Matt and Lizzie doesn't work at all. They fight about everything--he wants the window open, she wants it closed; she wants the shade down, he wants it up; he wants the door closed, she wants it open. All the bickering keeps Mr. McGuire, already frazzled by the repairman, awake all night.
Lizzie's not doing too good at school, either. The spacey art teacher Ms. Dew has come up with an idea for a school ""unity"" project: all the students will dip their hands in paint and put their handprints on a blank wall, making a mural. But instead of promoting unity, the students break into cliques, and Lizzie, Miranda and Gordo don't fit into any of them, not Kate and the cheerleaders,