Three generations after the Great Windigo Blizzard, a grandmare's letter to her daughter and son-in-law recalls the terrible "Old Times." She confesses her prejudices during that time, explains why she first opposed her daughter's mixed-pony-tribe engagement and reveals what changed her mind -- and her life. She ends with blessings on her granddaughters -- two fillies who will change the course of Equestria's history.