Shining Armor expected a quiet time in the Crystal Empire with Princess Cadence and Flurry Heart away visiting relatives. However, when something is discovered in the main hall his quiet time becomes an investigation.
Starlight travels with Sunburst to an old abandoned unicorn settlement that predates the ruling era of the Two Sisters. They're searching for ancient lost spells but something "bad" happens to them.
Haha, this was brilliant!