One day, after an information exchange with the heptapods, the aliens announce they are leaving. They shut down the looking glasses and their ships disappear. It is never established why they leave, or why they had come in the first place. The heptapod languages have changed Louise's life, and once she knows the future, she never acts contrary to that future. Gary and Louise start spending time together and eventually marry. When Gary asks Louise if she wants a baby, she agrees, knowing that they will divorce, and their daughter will die young.