When Scott's soon-to-be step sister moves to Beacon Hills all hell breaks loose and no one is sure how to handle themselves. Well except Brittany because she doesn't really understand what's going on. But will she be left in the dark forever?

"What are you smiling at?" I asked Stiles as I noticed him staring at me. "Oh, nothing really. Just how cute you are." He said, blushing as he looked down at me. "Well, you're not too bad yourself, Stilinski." I whispered, right before his lips met mine. Skyler McCall is Scott's twin sister. That used to be all Stiles seen her as: his best friends sister. Until now. Stiles/OC.