Guided by the curator of the Royal Library in Canterlot, and forbidden knowledge stolen from the alicorns, a group of of non-unicorn ponies restore spring to a cold and famine-stricken Equestria. This is the lost account of their brave sacrifice, the intrigue surrounding its aftermath, the birth of a beloved city, and the beginning of a tradition whose original meaning has long been forgotten, as told by the dragon youth who was the curator's personal assistant.