In a world where Rhea’s experiments have taken centuries longer to create a vessel for Sothis, crests are now extinct and magic only a legend. Felix, Lord Fraldarius, arrives at the Garreg Mach Officers’ Academy in the year 1864, and in the haunting surroundings of the old monastery finds himself strangely fascinated by the knight who has become his new sparring partner. But there is more going on in the shadows of Garreg Mach than he ever expected, and the secrets around Byleth only begin with a strange sword which glows in her hands. Reluctantly pulled deeper and deeper into the opaque workings of the church, Felix struggles to trust her as they attempt to understand the mysteries around them. And more than that, he can feel a war bigger than either of them brewing on the horizon.