The amnesiac princess Elena is rescued by Cecilia, the daughter of an enemy knight and former enemy. However, Cecilia did not save her out of kindness, but to fulfill her father's last wish and use her identity to bring down the empire. But when Cecilia tried to shape Elena into a revenge puppet, she discovered that this innocent girl was completely different from the rumored tyrant. As the Empire's pursuers approach and Elena's memories recover in fragments, Cecilia struggles between hatred and growing love - she finally needs to make a choice: should she push Elena into the abyss as planned, or betray her father's will and open up a third path with the person she should have hated?