Once a shy and introverted pony, now the resigned ruler of an entire nation, Twilight has been through it all. From boring talks with politicians, crazy battles against powerful foes, helping ponies in need, among many other legendary and not so legendary feats. After all that, she has assigned someone new for the position, and resigned from her throne, deciding to lay low and enjoy the rest of her years. But death is the only certain thing in life, and now, she has outlived her finite years.
Laying on the beach one sunset, the grim reaper gives her a visit. They end up having a small chat.