Opening number, "Get Ready" (Robinson) (all) Greeting sketch in which the Bradys describe the Water Follies and Krofftettes- who they are and what they do. The guests are introduced. (Commercial break) Musical number, "Walk Right In" (Cannon/Woods) (Mike, Carol, Greg, Peter, Marcia) Curtain closes. Mike and Carol look through her old high school year book. The two wonder how it is different for the Brady kids going to school at the ABC television studio. Dissolve to: The Brady kids lament on how much they hate school, especially at the studio. Merrill enters ringing a school bell, he is their substitute teacher. Bobby teases him. The What's Happenin' kids show up because their classroom is closed for the week. They join the Brady kids. A studio guard enters carrying a very angry woman he believes to be a Brady child, instead it turns out to be a little person (midget) and the mother of four children. Cindy assures the guard she is not a child but an actress by the name of Patty Maloney.