When Sandra meets Brenda's math teacher at the Jenkins' apt., they begin dating and he gets more serious than Sandra. Then, Sandra comes by the Jenkins' with her new rich date, while Mitchell is visiting. To get Sandra back, he spends all his money trying to wine and dine her. One night at the Piano Bar he announces that he is going to begin working as a computer exectutive, thereby making more money. Mary talks to Sandra and says that Mitchell loves being a teacher and is only giving it up for Sandra and to make more money. He and Sandra talk and the show closes with Sandra announcing their engagement. (thetvdb.com)