All the kids from Wayside School had to spend 243 days in horrible schools while Wayside was closed to get rid of the infestation of cows! Now the kids are back and the fun begins again on every floor. Miss Mush has prepared a special lunch of baked liver in purple sauce and it is pet day on the 30th floor. Unusual things continue to happen in the classroom on the thirtieth floor of Wayside School, which was accidentally built sideways with one classroom on each story.