Luna Eclipsed

S2, E4: Princess Luna, who had been saved by Twilight Sparkle and her friends from her evil alter persona, Nightmare Moon, decides to visits Ponyville on the festival of Nightmare Night (the Equestrian equivalent of Halloween), which centres around Nightmare Moon. The residents all panic at her appearance and outdated mannerisms, but Twilight helps her to acclimate to the festival. Despite this, Pinkie Pie and several children still run away at her approach, angering her and provoking her to threaten to cancel the celebration. Twilight learns from Pinkie that she is just having fun being scared. Twilight uses this to show Princess Luna that the children love her but want to have fun being scared on that night. Profoundly heartened by this revelation, Princess Luna happily joins in the rest of the festival.