Rainbow and Applejack have a simple unspoken rule with their friendly rivalry: Keep their friends out of it. But it was only a matter of time before one of them bent the rules.

Two ponies go to enjoy a morning cup of coffee at a local Moonbucks, however one of them is not too happy with the new Hearth's Warming cup designs.

What happens when Applebloom, Scootaloo, and Sweetie Belle can't decide on what to do and decide to take part in what Applebloom calls a 'tie-up game' during an otherwise normal sleepover?

A chance encounter with a longtime friend sends Seren Starfall of the peaceful Stable 64 into a maelstrom of lies, mistrust, and bloody strife, where allies are uncertain and enemies hide themselves behind masks.