Relena heads home after seeing her father die. She tells her mother (in her own way) that her father told her that she was part of the Peacecraft family. I think the exact quote was "you're my mother, you'll always be my mother!", but anime is kinda' weird sometimes.
Anyway, Relena shows up at her big party. All of these girls immediately approach her and say how sorry they are, bla, bla, bla. Relena tells them to be stronger and to get over it. During the party, Heero is deleting all of the school's files on him.
Wufai Chang is fighting OZ in the meanwhile. He bursts into a town, going straight through a ship. He sets a town on fire and destroys it (this has no relation to Relena's party, it's just to fill space in the episode I guess).
Relena starts to get curious as to where Heero is and finds him in his room on the computer. Heero, Mr. Death, points a gun at her. Instead of going crazy, Relena asks him to dance with her (Like I said, anime's kinda' weird sometimes). Heero agrees for some reason.
The dance continues, until OZ mobile suits are spotted near the party. The dance breaks up, and Heero runs off to his gundam. He's destroying all of the mobile suits, and Relena is just sitting there watching. Relena's friends approach, and she tells them to run.
Just as a huge chunk of a building is about to fall on Relena, Heero stops it with his gundam. Relena keeps asking why he didn't let her die. Heero's wondering the same thing himself. He destroys all of the mobile suits and flies off, leaving Relena alone.