Meet Sasha, whose fiance is Crown Prince Alexei, famous throughout the land as the legendary "Heroic Sword Saint." The problem? He's secretly a complete "Muscle Brain Prince" whose entire personality is focused on swords and working out. Sasha has been struggling behind the scenes to keep Alexei's reputation from crashing and burning. But then her younger stepsister, Natasha, who has the power of "Prophetic dream," shows up, and suddenly, everything goes downhill fast! Before Sasha knows it, she's being called a "Villainess" by everyone! "If this keeps up, the Prince's popularity will be ruined because of me!" Feeling totally responsible, Sasha decides to break off the engagement and tries to set up Natasha, the beloved "Saintess" of the Academy as the new fiancee. But for some reason, Alexei rejects her proposal with all his might! He absolutely refuses to let her go! It’s a rough and rocky missed connection love story between a serious lady who is clumsy in love and a muscle brain Prince who is completely clueless about girls' feelings.