This follows the story of Sky Baron a mare who works as a pilot for the Grand Pegasus Enclave stationed on the outskirts of Vanhoover in Thunderhead: Leviathan. On a training mission down to Vanhoover her Aerialbird gets shot down, and now she must make it so that her, and her squad can return safely. Though there a works in the background on a conspiracy on 3 squads similar to hers that wen't M.I.A in Vanhoover, and she begins to wonder the Enclave is truly the last hope for Equestra as the lines of duty, home, and family get blurred more and more.