Sadie Katz and Cleo Chapman have been rivals since birth. Literally. They entered the world competing to be the first baby born in the new year, and ever since Cleo beat out Sadie for that title, she has been nonchalantly beating Sadie at just about everything--and making it look easy. Now in the fall of their senior year, Sadie and Cleo are neck-and-neck for valedictorian. But then a string of increasingly serious pranks take over their high school, and all signs point to Sadie and Cleo as the perpetrators. Suddenly expulsion is on the line, and the only way to clear their names is to team up and find out who is framing them. It's not only suspects the girls are questioning, though. Sadie's ivy league dream isn't feeling as appealing as it once did, and Cleo is wondering if it's about time she start fighting for what she really wants instead of just accepting whatever comes easiest. With their futures on the line, the two grow closer, and both begin to wonder: Could it be that Sadie and Cleo weren't meant to be rivals at all, and were instead destined to be something more?