Moonlight had been having a question on her mind for a few days now, but she wouldn't speak on account of her two mothers being busy with royal duties. Until one afternoon where Twilight is having an afternoon off, she decides to ask her question.
Twilight expected Moonlight to ask any question except where the foals come from. Now, in a dilemma where she doesn't know if she should tell the truth or not, she decides to talk to her wife to ask for advice on what to do about it.