Frasier and Niles decide to enter an auto repair class after they embarrass themselves in front of their respective dates when their car breaks down and the women show more knowledge on engines than them. After falling behind on the course, they start to study frantically, until Roz suggests they simple coast the course. Of course the two take it too seriously and get kicked out of class. Meanwhile, Martin is overprotective of Roz's new puppy, which creates a conflict between them. (thetvdb.com)