After the war with Plegia, Chrom married Sumia and had a daughter named Lucina, who bore the Mark of the Exalted in her left eye. The peace was short-lived, as Virion and his escort, Cherche, announced the arrival of a new threat to the continent of Ylisse : Walhart, the emperor of the western continent of Valm, was actively seeking to expand his power and was preparing to claim Ylisse. Chrom enlisted the help of Validar, the new king of Plegia, to obtain ships and quickly sail to Valm to stop Walhart.

Arriving in the Plegia's audience chamber, you, Chrom, Frederick and Robin discover Aversa, now serving the new king, Validar. You immediately recognize him as the man who attempted to assassinate Emmeryn a few years earlier. Aversa, in addition to financing the campaign, offered the entire Plegia fleet, but without providing any soldiers. And how could you blame them, since the war had greatly weakened Plegia in various aspects.

Before the meeting ended, Chrom's group encountered the Hierophant, the supreme religious authority of Plegia, who is the spitting image of Robin and, by some sinister coincidence, bears the same name. The hierophant's demeanor was all the more strange. In addition to muttering mysterious phrases, this double was staring at you and Robin with a strange expression. You frown in confusion, and the hierophant smiles seductively at you. You are even more disturbed. This audience was a trap, and you had to get out of it. Robin reassured you by taking your hand. This small gesture did not escape your lover's weird twin. You gently squeeze Robin's hand.