The forces of Hell have tasted the magical land of Equestria and found it to their liking. Can the Elements of Harmony stop the Seven Deadly Sins from unleashing hell on their world?

Chrysalis has been defeated, and Starlight extends her hoof in friendship. But if she's going to make peace with the ponies, she's going to make sure it's done in her way.

Twilight claims that for Chrysalis to have a good life, she just needs to not be evil. Chrysalis takes it as a challenge, With the intention of proving Twilight wrong.