Rainbow couldn't be any happier with the last few months - her newfound relationship with a certain yellow pegasus has soared to fantastic heights. The pair of pegasi are deeply in love, spending considerable amounts of time together while basking in each others' company; everything is perfect.

Well... according to everyone except for Rainbow's younger adopted sister.

Seeming to despise the newcomer interrupting their once solely sisterly dynamic, Scootaloo hasn't been afraid of voicing her displeasure; Meanwhile, Rainbow wants nothing more than to see two of the most important ponies in her life get along.

However one fateful day, an unexpected Wonderbolt Emergency forces Rainbow to leave Scootaloo in the care of Fluttershy - surely this will work out, right?

Can these pegasi ever be a family of 3? And what exactly is Scootaloo hiding to prevent herself from bonding with Fluttershy?