With the Aurora Stone stolen, every Sky Knight squadron in Atmos joining forces to retrieve it, only to fail miserably when the Dark Ace uses its power against them in a single blast against the entire Sky Knight fleet. Using the crystal to power her Storm Engine, Master Cyclonis plans to wipe out every terra in Atmos simultaneously. Meanwhile the Storm Hawks mount their own mission to retrieve the crystal, opting to use stealth over brute force. While the rest of his team sneaks in through Cyclonia's many underground passages which Stork and Piper take in the Condor and through use of donut carriers which Finn and Junko use for passage and for snacks, Aerrow provides a distraction on the outside, defeating Master Cyclonis' minions one by one, even the Dark Ace. Within the fortress, the te