A day that will live in infamy. Krynn's Vanguard and The Black Eagles joined Rhea in the Holy Tomb for the ceremony that would soon take place. This ceremony would eventually lead to the revival of the Goddess Sothis. Before Rhea could lead whomever she wanted to the Throne in the Holy Tomb to receive this revelation and revival, Edelgard called out "Stop right there!". Turning to face her, everyone was met with Edelgard, Hubert, and a man they hadn't met before Metodey, standing with a contingent of Abanasinian Empire Soldiers. Metodey ordered them all to take the Mark Stones that were in the caskets.
After confusion from all of the Black Eagles and deducing that the Flame Emperor was connected to the Empire, Edelgard revealed that she, herself, is the Flame Emperor.
Rhea, infuriated, ordered Krynn's Vanguard along with the rest of the Black Eagles to stop this assault and protect the Holy Tomb. A battle ensued where Krynn's Vanguard won by the skin of their teeth.
After the battle, Rhea ordered Krynn's Vanguard to kill Edelgard as she 'is a danger to all of Ansalon'. Krynn's Vanguard refused and sided with Edelgard as Rhea revealed her true form as The Immaculate One. With that, Krynn's Vanguard and the Black Eagles made their escape.