Strange things happen within the Everfree Forest. All ponies know that. What they don't know is what lives in it. Everyone is in for a surprise when a zombie comes crawling out of the wicked forest. Call it a curse, an awoken evil, or a cruel joke. It could be many things. No one expects that it wants to talk of all things. But under all that decaying flesh, there's still a heart, though not necessarily still working.
Maybe it takes a shy pegasus and a little bit of kindness to get that heart pumping again.
Set before Twilight's Kingdom.