The Karate Kidder / Playing Favorites.The Karate Kidder: Alvin takes up karate, and is set to have a big match against a well-known opponent, which worries Dave, Simon, and Theodore, who think that Alvin would end up getting hurt. Simon decides to put Alvin through aggressive and strenuous training sessions, hoping that it will tire him out to the point that he will sleep through the match. This does not work, and Alvin goes up against his opponent - who turns out to be the son who shares the namesake of his well-known father - and wins the match.
Playing Favorites: Dave has many scrapbook full of newspaper clippings about Simon's achievements, as well as photos of him throughout his music room. Alvin is convinced that Simon is Dave's favorite, and persuades Theodore into competing against Simon at whatever they can to prove to Dave that they can succeed at something to make Dave as proud of them as he would be of Simon.