Elizabeth Wakefield is walking on air. She can't wait to attend the prom on the arm of her sexy date, Devon Whitelaw. But when her ex-boyfriend, Todd Wilkins, wants to be alone with her one last time, will Elizabeth be swept away by a flood of romantic memories?
Jessica Wakefield, Sweet Valley's most infamous party girl, is in no mood to celebrate. She's been ditched by her prom date and pegged as a loser on the biggest night of the year! Will Jessica be forced to spend the night by herself, or will true romance blossom when she least expects it?

Todd turned to Elizabeth, and she cringed at the look of disbelief on his face. She'd never seen Todd so upset. "Why would you let Devon believe Jessica wa you?"
"You don't understand," Elizabeth choked out. "I didn't want to hurt--"
"I'll tell you why," Devon snapped, his hands balling into fists. "Because sweet little Elizabeth wanted to lead us both on."
A small crowd had formed, but Elizabeth ignored them, her heart aching as she struggled to find a way out of the mess she and Jessica had created. But Todd's face suddently lost all its color, and he turned to her again, his expression totally heartbroken. His voice sounded hoarse when he spoke. "Liz, tellme it's not true. Please, tell me...it's not true."
Elizabeth choked out a sob. She covered her mouth, her body trembling. How could she tell Todd the truth when she didn't know what it was anymore--when she was in love with both of them, but she'd hurt them both? She looked at Devon's angry, unforgibing face, then back at Todd's devastated expression, and she realized she didn't have the words. The tension raced between them, charged and thick, filled with anger and hurt and mistrust. And it was all because of her. She suddently felt ill. Clutching her stomach, she burst into tears, then fled out the back door.

Jessica is ready to kill Lila, and Elizabeth has lost both Todd and Devon. With relationships crumbling all around them, will the Sweet Valley High junior class be able to pull together to win a post-prom interschool competition? Party Weekend!