One is a seemingly spoiled and willful heiress who is actually exceptionally clever. The other is a dashing young gentleman who appears carefree and unruly but is devoted to his country. A young woman returned from studying abroad and a young man determined to save his nation spend their days bickering and doting on each other. To outsiders, he is a notorious playboy, yet he is endlessly patient with her, protects her, and indulges her. Which side of him is the real one? As layer after layer of disguise is peeled away, everyone around her seems to have another identity. Amid all the mystery, who is the true hidden player?