Principal Scampi is honored at a Farber High school assembly. Unfortunately, some of the students vandalized his photo beforehand. Principal Scampi doesn't have enough to go on to be able to figure out who committed the crime. Lisa feels sorry for him and says that she will help him find out which students are guilty. Unfortunately, as Lisa and Principal Scampi look for clues, they all lead to Wyatt and Gary, both of whom are innocent.