After the heartache of losing two of their own, Scott has an unexpected visit from an old friend. Does this mean they can reunite their pack or are there evil intentions at play?
Determined to put an end to Kate's plan, Scott is forced to team up with an unlikely ally to make sure it happens.
A new Freshman player jeopardizes Scott's position on the Lacrosse team; Stilinksi investigates a savage murder.
On the night of the full moon, uninvited guests turn up at Lydia's lake house; Derek pursues a killer.
Scott, Stiles and Kira take part in a Lacrosse game. Lydia needs help to control her powers.
Scott is forced into helping a dangerous enemy; Derek and Malia track an old ally.
A mysterious outbreak overtakes the school.