You're invited to join Esther and Sophie at The End, a mysterious event that's supposed to be a really killer party. But murder is on the agenda, and these two best friends must figure out who's behind it all before the killer finds his plus one.

Esther and Sophie want to stay in their small town by the sea and volunteer in Oceanside High's historic library forever, but it's time to grow up, apply for college, and protect the library from demolition. While the adults argue about the library's future, the girls investigate the intriguing invitation, but they're the only ones who believe The End may be someone's final event. Every student at Oceanside High has marked themselves as going to the dance party slated to be held at a Stonehenge replica high on a cliff over the ocean.

As the mystery host leaves disturbing clues, Esther and Sophie soon realize the dance party and the crimes surrounding it are just the beginning of the end. Will it be their last dance, or will they be able to put the spotlight on a killer?