It's no secret that the Flower Sisters are three of the most timid ponies in Equestria. Roseluck, Daisy, and especially Lily Valley are prone to panicking and fainting at the drop of a hat. But while most ponies are familiar with their high-strung personalities, what almost nopony knows is the secret concealed beneath. The true reason for their jittery nature is dark and destructive, and comes from deep inside the underground mountain tunnel on Equestrian Route 15.