1976, Rhode Island. Lily has two loves. There's the boy, in whom she finds a kindred spirit. And then there's Jane, her brilliant but troubled younger sister and best friend. Lily has a plan. She'll graduate, go to college, marry her high-school sweetheart and start a family of her own, her future unfolding before her as a bright, clear path. But the laws of love and logic are not as simple as Lily thinks. When one fateful night throws Lily's life on an entirely new course, she'll discover just how fragile the futures are that we so carefully plan and imagine for ourselves. Because the universe has a plan of its own - and what seems to be the end of one great love story might just be the beginning of another...