Tread lightly is considered a brillaint flawed scientist. A few ponies are ashamed of her while others appear to embrace her ideas. Today however, her new lab assistant has finally arrived and with that it is time to begin a journey to create something beautiful for those whom have suffered the loss of a wing.
Her new assistant and an old friend will face a few trials along the way past the northern lights of equestia and into the depths of the mountains to search for something that fell from the stars. All this way only to discover the reason why no pony really uses the star rock known as iridium; as something terrible is secretly awaiting their arrival. It even goes so far as to inhibit their journey, terrorize the ponies, and leave them with scrambling for solutions to their troubles.