What if at the age of 28 you quit growing old?
What if as the years past, you have elderly children?
What would life be like if someone close to you grew old and changed but you did not?
What would people say? What would the government do with you?
All these questions are answered in the "Age of Adeline". It is a well crafted story where the special effect is time much like "Boyhood." Great cast and smart sci-fi for thinking people.