High school outcast Chuck is navigating the wild and confusing days of his senior year. He is growing apart from his friends. His mother has decided to date a much younger man -- who just happens to be the school’s gym teacher. And his dream girl, the brilliant, beautiful and popular Melissa Mercer, barely acknowledges Chuck's existence. He plans to capture Melissa’s heart by befriending her younger sister, Mary, but that gets complicated when a video of Mary becomes the talk of the school.