公孙丽自小与两位师兄跟随爷爷习武，偶遇少年嬴政遭人欺负将其救下，嬴政对这位妙龄少女念念不忘。战国纷乱，公孙丽与二师兄荆轲相恋，二人因战争离开家乡，相依为命。二师兄因保护公孙丽中毒受伤。为换解药，公孙丽进宫嫁给嬴政，成为嬴政的宠妃丽姬，却发现已怀有身孕，嬴政替丽姬瞒下此事，谎称孩子是自己的。天明出生后，嬴政对他视如己出，丽姬深受感动。大师兄韩申进宫营救，得知真相后为保护丽姬及孩子，潜伏宫中做侍卫。丽姬在与嬴政相处中发现这个冷血男人细腻柔软、不为人知的一面，不知不觉爱上了他。

Gongsun Li has been studying Kong Fu from her grandpa together with two elder boys since her childhood. One day, she encounters junior Ying Zheng and saves him from being bullied. Then it comes the wartime and Gongsun Li’s grandpa dies in a war against Qin. So Gongsun Li is forced to leave her hometown. Later, Jing Ke gets poisoned for trying to rescue Gongsun Li. In order to obtain the cure for Jing Ke,Gongsun Li chooses to marry the king Ying Zheng, who conquers her country and murders her grandpa... Despite everything happens between them, Gongsun Li is gradually moved by his tenderness and falls in love with him...