Although birthdays mark the passing of another year, they often don't feel any different than a normal day. But for six teenagers, their fifteenth birthdays mark the beginning of the end. At first, their unexplainable newfound abilities seem fascinating. But when strange alien creatures begin appearing around Boston, they'll have to find each other and unite against the impending threat. Not only that, but they'll also need to delve into the mystery of the origins of their powers. Perhaps most of all, they'll have to face that disturbing feeling that this is is all happening because of them.