On the day of her departure for college, Alison wants it to be about her for a change and not her sister Mackenzie, who she thinks is a self-centered bitch. But, as the day progresses, Alison's true feelings about her sister come to surface. She worries about how Mackenzie will battle her anorexia without her around. And when the time comes to say goodbye, an honest confrontation between the two could jeopardize the future of their relationship