Octavia takes Vinyl to her favourite coffee shop in lower Canterlot, and a story from her not-so-distant past arises. Then things go downhill very quickly.
Shining Armour investigates the murder of a banker who's memory problems forces him to write every action he does in a diary. Despite this precious clue, Shining finds the case harder than expected.
Stev, an outgoing family man, meets the most peculiar visitor renting out the house next to his: a graceful and cultured pony on vacation. Of course, the only neighbourly thing to do is invite her to a barbeque.
Ribbon Red's Emporium is a small shop where ponies can get presents for their friends and family. Rainbow Dash goes in hoping to find a very special gift for a very special somepony.
Applejack is going on a delivery to Fillydelphia that'll take her two days to complete... longer if a mysterious pony dressed in black finds a way to stop her in transit.
Octavia and Vinyl find themselves travelling by airship to Trottingham, only to discover that the engineer has been murdered on board. With Vinyl the prime suspect, it's up to them to find the real killer before he strikes again.
Rainbow Dash lies once too many times to Applejack, causing the farmpony to lose her temper. The resulting argument leads to discovering more than they ever expected about each other...