Series premiere: An unpopular teen (Tyler Posey) reluctantly goes into the woods one night with his best friend, and while there, they encounter a strange creature in the dark. He narrowly escapes an attack, but sustains a vicious bite in his side, and the next day, he starts to notice strange changes in his body.
Scott is excited for his first date with Allison, until it becomes a confusing group date with Lydia and Jackson in tow. Meanwhile, a mysterious animal attack occurs, putting Stiles' dad, Sheriff Stilinski, on high alert.
Scott scrambles to protect the people he loves, including Allison, who's beginning to follow clues about her family history. Meanwhile, Stiles is getting closer to solving the mystery behind Derek's family.
Scott is caught in the middle of a war between hunters and werewolves, and he enlists the help of both his friends and enemies to stop the mysterious killings and win back Allison in the Season 1 finale.