Alex Posey is the sister of the famous Teen Wolf actor, Tyler Posey. She's not famous, but some days she would be an assistant to the director or she would be an extra. But one day, Alex gets a job to play one of the new characters in the show. She plays "Savannah Roberts," Isaac Lahey's love interest. Some things get a bit more serious when Alex discovers that she actually has feelings for him. And after that day, things start to go downward.