Silver Streak, son of Twilight Sparkle... was an oddity even from birth. Where his father, Flash sentry was a Pegasus and his mother was originally a unicorn, he was an Earth Pony (or Earthling as he prefers though that's a derogatory term usually) then one day, he and his friends have to go back in time... but not even the demon Silver "contracted," Century, remembers why. and when Century's power is so strong the Sirens, THE FREAKING SIRENS don't want it... you know it had to be something big.