Equestria's in danger! Powerless and threatened by a great evil, Princess Luna discovers she can't count on her sister or any of the usual heroes of Equestria. Running out of time and with nowhere to turn, Luna assembles a team specially suited to save the day... made up of former villains! Will Luna, Capper, Tempest Shadow, Trixie, and Stygian all be able to work together and find a way into the most dangerous place any of them have ever been?

"Originally published as My Little Pony: Nightmare Knights, issues #1-5"--Indicia.

The best-laid plans of ponies often go awry--and as the heist begins to fall apart, Luna's knights are put to the ultimate test. With teammates turning and new revelations coming to light, will the Nightmare Knights ever be able to defeat Eris and return Luna's powers?

Powerless and threatened by a great evil, Princess Luna discovers she can't count on her sister or any of the usual heroes of Equestria. Running out of time and with nowhere to turn, Luna assembles a team specially suited to save the day... a team of former villains!

Princess Luna assembles her team of ne'er-do-wells: Capper, Tempest Shadow, Trixie, and Stygian! Will they all be able to work together and find a way into the most dangerous place any of them have ever been?

Princess Luna and the Nightmare Knights face the ultimate test! With the fate of the heist--and Luna's powers--in the hands of Eris, will the bond between sisters be enough to overcome her chaotic plans?!

The heist begins! As Luna's band of misfits infiltrates Eris' Palace and Casino, they are faced with challenges that will test each member's resolve. Will they complete their mission, or will they turn on each other first?!