Buffy: Angel? Angel wakes up from the nightmare. Buffy: What whole thing? I can't believe you're breaking up with me. For the last twelve years. I mean, he chucks Xander and went right for the formal wear. A. Tucker: Do you want to go to the prom with me? They dance.
Plan: A: Angel; Q: Who shows up for the last dance? A: the prom; Q: What does Buffy have to save from Hellhounds? A: formal wear; Q: What do Hellhounds have a fetish for? Summary: Angel decides to do the right thing and break up with Buffy. Meanwhile, Buffy has to save the prom from Hellhounds with a fetish for formal wear. Angel shows up for the last dance.