Serena Hale, the youger sister of Derek Hale, just got to Beacon Hills. After a quite hard time spent after the fire, Serena wanted just to spend time with her only family, her brother Derek and her uncle Peter. But it can't be that simple for a teen werewolf girl. She decides to become friend with her brother's 'friends', and as well to help them, eventually falling for the first of them she met, Isaac Lahey. But does she has any chance with him against her friend, the wonderful hunter Allison Argent?