The troubled young man embarks on a journey.

Fabian, the Duke's son, had been engaged to Linnea of the Marquis family since childhood. However, the Marquis family had problems. The Marchioness doted excessively on her younger sister Helka, while the Marquis ignored the situation as troublesome. Though young, Fabian tries to take action, but the sisters... ※This is from Fabian's perspective: "If you prefer your younger sister, I'll gladly break the engagement, so please be happy together."