Flying the dark and dangerous outskirts of Ponyville at night? No problem for Rainbow Dash.

Dealing with a depressed, forlorn Princess of the Night who is worried about her place in a new world? Er, can I take a pass on that? No? Oh, well.

Whilst out flying one night, Rainbow Dash hears the plaintive lament of Princess Luna, who fears that Celestia will never truly forgive her for her past misdeeds. Will she be the one to offer her solace in her time of need?