It is wrong to not invite grandparents to a graduation.
Nina is graduating from college soon, and she's preparing for the big day.
Nina wants to finalize her list of invites to her graduation.
Nina makes sure to add her grandparents to the list of those invited to her graduation so that they don't miss it.
Nina invites her parents, cousins and some friends but neglects to invite her grandparents.
Nina's grandparents are very proud of Nina and her accomplishments, so they give her a generous graduation present.
Nina's grandparents' feelings are hurt, and they never get a chance to give her the graduation present they were planning on.