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It looks like Chromia, Moonracer, and Windblade were having a peaceful walk through town when there was all the sudden an ambush from the persistent Deceptive-Ponies and the reason for the ambush, for the obvious reason of wanting to steal their sources and stuff like that. But the three mares were very surprised and as a result, completely unprepared for such an event, especially after having months of peace and then all of the blue, they come back.