the purpose of stable 76 was to train young colts and fillies to survive and repopulate the surface once it became habitable. unknown to all but the overmare's and overstallion's of the stable the surface wouldn't be habitable for centuries. a young stallion by the name of shining justice was eager to go to the surface so he and his best friends jade moon and blits star worked up a plan to get there. through a lot of confusion sneaking and handy work they were able to get to the surface but were surprised at what they saw.
(credit for the artwork and help with some editing goes to rainbow10dash ( http://rainbow10dash.deviantart.com ) who helps make this story possible