(Second attempt at a fic. You don't need to read this to understand the other one when it's finished, but it will help if you want to know who Rowan is.)
After the fall of King Sombra at the hooves of Celestia and Luna, his legacy falls upon a small group that was close to him who call themselves the "Filli Umbrae" (Latin for "Sons of the Shadow"). This is the story of the alicorn Rowan, who was created by the "Umbrae" to fulfill their dark goal of bringing King Sombra back, and how he came out of the shadow they cast over him, defeating all obstacles and finding what was once taken away from him.