Cheon Yeon-soo (Jeong-ah Park)'s father became a wealthy nouveau riche by speculating in land, and Cheon Yeon-soo became the center of pursuit by the opposite sex because of her sexy and beautiful appearance and rich family background. However, the always arrogant Yeon-soo met the handsome college student Zhengdao (Jin-woo Park) by chance, and the trajectory of her life changed. In order to retaliate against Zhengdao for not being moved by her beauty, Yeon-soo did not hesitate to seduce Zhengdao in person. Unexpectedly, although the plan was successful, she also developed a sincere love for Zhengdao. But Zhengdao told Yeon-soo that he was the eldest grandson of the ancient clan of Le'an Yicheng, and he would go back soon to accept the wedding arranged by his elders. At this time, the underworld boss Luo Dazhen (Won-jong Lee) also wanted to marry Yeon-soo because he had his eyes on President Cheon's wealth. However, this relationship that might have ended in vain took a turn, because Yeon-soo found out that she was pregnant, and the mysterious father of the child became the focus of everyone's tracking!