Set in the 'Youngverse'
King Terra and Queen Aeterna hire a new nanny for their daughters Luna and Celestia after the lastest nanny angrily humbly quits her position after a series of pranks by the two siblings. (Once again being instigated by Celestia).
When they meet her, Luna instantly takes a liking to her. However, Celestia isn't so keen on the idea... and tries to deter the new nanny away from her post.
... with backfiring results.
Big thanks to DVAN56 and bocaj518 for pre-reading.
Cover art taken from this fantastic comic by the awesome greviousfan, go give her some love!