When Becca transfers to a high school in an elite San Francisco suburb, she's worried she's not going to fit in. To her surprise, she's immediately adopted by the most popular girls in school. At first glance, Marley, Arianna, and Mandy are perfect. But at a party under a full moon, Becca learns that they also have a big secret. Becca's new friends are werewolves. Their prey? Slimy boys who take advantage of unsuspecting girls. Eager to be accepted, Becca allows her friends to turn her into a werewolf, and finally, for the first time in her life, she feels like she truly belongs.