Cadance is an Alicorn, a hybrid species that is born with the gift of unnaturally long life. She is also married to the stunning and heroic Captain, Shining Armor. It is a union that is truly ageless, "until death do us part."

But Shining is a unicorn, the likes of which don't live for nearly over a thousand years... As everything changes around her, Cadance must deal with the biggest shock of all: losing her mortal husband.