If you have Nick Valentine as a companion...
You and Nick went to check on Ellie, when you get there she says she has a case for you and Nick, what do you do?

If you DONT have Nick Valentine as a companion...
You and Plazmus had been traveling for awhile and he's been acting weird for awhile, after a bit he had disappeared, leaving a note that he was going to Far Harbor to clear his head, what do you do?