This story is a sequel to Corruption of Dawn
It has been three months since the catastrophic attack on Canterlot by Sombra's army. Twilight has yet to truly recover from the event that she blames herself for. But the forces of Darkness are striking again in search of the Etna Key to free the dreaded Red-Black Beast. With time now short, Twilight and her friends must find the Etna Key before it's too late.