During Equestria's annual royal summit, newly-met Shining Armor and Pharynx discover they have a fair bit in common, including a passion for homeland security, and an extremely dorky little brother/sister.
Twilight Sparkle is Dead. Her friends decide this isn't an acceptable state of affairs and vow to change it. They really should have compared notes first.
Battling Starlight Glimmer, Twilight finds herself in another alternate timeline. Only this time, she finds herself in the Golden Oak Library with the Princess of Friendship: Sunset Shimmer.
Rainbow Dash comes face to face with Death himself! And he's... surprisingly cordial, actually. But when Rainbow ends up in his debt, there's only one way to get back to the life she knew: take up the role of the Grim Reaper herself.
Now what do you do? When you've been gone a thousand years, you have a lot to catch up on. Heroes old and new must deal with the consequences of their choices, each in their own ways.