The sisterhood can be a real killer...Brittany, Hope, Shelly, Beth and Lindsay are headed to the mountains for a ski trip to celebrate their high school graduation. There are laughs and good fun at every turn until the girls swerve onto an icy lake. The ice cracks and Lindsay disappears below the surface, never to be found again...Five years later, the girls decide to commemorate Lindsay's death by visiting the ski resort again. It starts off well with laughs of days gone past as the girls catch up on what has been going on with their lives. But when Beth finds Lindsay's old necklace in Brittany's belongings, she begins to get suspicious. Soon, each girl begins to air their suspicions on what really happened that day.