Empress Serena died in battle to protect her daughter and entrusted the infant to the laundress,
Martha. Masha, out of jealousy, switched the swaddling cloths, making her biological daughter
Rosa the princess, while the true princess Ivy was reduced to a wingless female servant. Eighteen
years later, Ivy participated in the Saint's Wing Trial for freedom and accidentally awakened the
Empress's relic, revealing her bloodline. The False Princess Rosa and Augustus repeatedly
misunderstood and persecuted her, even tearing off her wings. Ivy, under the protection of the
Vow-Keeper Knight Kain, awakens her Eight-Winged Power, uncovering the truth behind the
switch and the Fallen Wing conspiracy. In the end, Rosa's attempt to assassinate her father and
seize power failed. Ivy ascended the throne, abolished slavery, and became a true empress.