Twilight Sparkle was seven years old when she was saved by an angel, 10 years old when she first attempted to go grave robbing, and 13 years old when she successfully summoned her first demon.

Shining Armor was 13 years old when his sister was nearly killed, 16 years old when he caught his little sister's attempt at grave robbing, and 19 years old when his sister summoned a demon from the pits of hell.

Cadance was 13 years old when she met Shining Armor in detention, 16 years old when she tried to confess to Shining Armor, and 19 years old when her boyfriend's sister summons a demon.

Sunset Shimmer doesn't remember how old she is. She knows that she is the last demon, summoned by Twilight Sparkle to make a pact that will tear reality itself asunder.

They must somehow survive a world gone mad and each other.