Cory's excited about graduation week and all its traditions: the yearbooks, rings, senior pranks etc. Shawn, on the other hand, isn't into the spirit of week and insults Cory by writing a brief, non-personalized message in his yearbook.
Cory has Topanga to worry about as well. She turned down Yale, but he doesn't want her to make the wrong decision because of him. Shawn congratulates Cory for pretending to be supportive, but Cory insists, that while he doesn't want to be seperated from her, he wants what's best for Topanga.
In c1ass, Mr. Feeny assigns an optional paper about what's in their hearts this week. Shawn doesn't want to do it, but Mr. Feeny and his friends think he should.
Topanga asks Cory if he's serious about her considering Yale, and he says that he is. She's appreciative, but Cory begins to feel bad.
He tells Shawn that Topanga is going to Yale and that he's upset because he didn't think she actually would. He doesn't want her to go, but he doesn't want her making the wrong decision.
Topanga visits Mr. Feeny after school to talk about her decision. He tells her that unless she has a very good reason not to go to Yale, then she should go.
In their last Mr. Feeny wants to say something, but the bell rings and the room empties. Cory, Shawn and Topanga stay behind, wanting to hear what he has to say. They ask him if his decision to retire had to do with them. "Well, yes," replies Mr. Feeny, "but not because of what you've done to me. Because of what you've done for me." He continues, "Sometimes the things you complain most about, are the things you care most about. By the way, how is that paper coming, Mr. Hunter?"
At the ceremony, Mr. Feeny introduces Topanga as valedictorian. She goes up to the podium and says she worked hard on her speech, but she's not going to give it. Instead she passes off the microphone to Shawn, who tells a bewildered Cory, "Hey, you only go to high school once."
Shawn, using Mr. Feeny's assignment as material, describes his lack of motivation throughout high school, and his sorrow for not applying himself. "I could have done better. Congratulations to those of you who did."
Eric interrupts the ceremony with a musical tribute to Mr. Feeny, singing To Sir, With Love.
While diplomas are being handed out, Topanga tells Cory about her meeting with Mr. Feeny--about her going to Yale unless she had a good reason not to. "Well, there isn't any good reason," says Cory. "Actually, there is", she responds.
Mr. Feeny announces his congratulations to the class of 1998. Everyone stands except for Topanga, who looks up at Cory and asks, "Will you marry me?"