A battle of love and power erupts over the inheritance of genius genes.

One day, college student Jung Ga-in suddenly appears before Gyu-jin and proposes marriage. But Gyu-jin—polite, kind, and highly educated—finds her sudden approach overwhelming and declines, as he always does.

On his way home, Gyu-jin is ambushed by a mysterious attacker, only to be saved by Ga-in’s bodyguard, who has been secretly watching over him. Taken to the Jung family mansion, Gyu-jin finally learns the shocking truth from Jung Woo-in, Ga-in’s father and chairman of the powerful Woosung Group:

Gyu-jin is the sole heir of a bloodline that passes down the nation’s top 1% talent through generations. His “genius genes” are what the elites desire most.

But Woosung Group isn’t the only one after him—so is the Sejeon Group, led by the family of Yoon Min-ji, Gyu-jin’s former lover and Woosung’s long-time ally.

Meanwhile, Ga-in has spent her entire life preparing to be the perfect bride for one man—Gyu-jin. Now, caught between love, family ambition, and ruthless rivalries, will Ga-in transform into a modern-day Princess Pyeonggang, standing by her “foolish Ondal” Gyu-jin, as they face the deadly intrigues of the nation’s most elite families?