As kids, Twilight and Sunset were best friends, but a tragic accident cut their friendship short. Years later, Twilight investigates the incidents at Canterlot High and comes face to face with what appears to be a literal ghost from her past.
In the weeks before Shining is promoted to captain, he must unravel a mystery surrounding the murder of a stallion in the street, navigating the gritty and dark streets of Canterlot in an attempt to find the truth.
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.
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.