Arriving late at Fluttershy's cottage one night, Rainbow Dash has something on her mind that - for once - has nothing to do with flying or danger, or flying into danger. Fluttershy soon learns that her friend's burgeoning relationship with Scootaloo is growing into something more: they're becoming as close as sisters and Rainbow Dash feels herself to be singularly unsuited for such a role of responsibility. Can Fluttershy convince her otherwise