The girls are having sex in the women's room of the girls' dormitory. It's hot outside, and the girls are getting ready to go to bed when they hear a loud noise outside. The girls run outside to find the noise to be a thunderclap, and they run back inside to find it to be lightning. They're both so excited that they can barely keep their eyes off each other, but they manage to hide their excitement from each other because they can't see each other's faces.