'His Last Letter' is about a loving father and mother who leaves their last wish and words to their last family member, Hope. The father had died unknowingly, said to be missing. But, one day, the filly, who had grown into a mare, being sentimental, finds the letter in a box of their personal belongings. Years after, her mother died of a home robbery.

In reality, however, her father died of protecting his family. She, herself, is involved with a problem that's dark and sad. The family of three pegasi, a mare, a stallion, and a filly (who has now grown into a mare) living in the happy city of Ponyville, had kept themselves close together, so that way, none of them would lose their way. Her father knew, that he did what he could. He died with honor and pride. The mother, feeling the same way as Hope's father did.