Lisa's childhood was not happy; her parents' love was not acknowledged by her grandparents, and her father's wife, whom he married according to family wishes, knew about them and hired people to constantly harm them. Lisa could only follow her mother and hide. Fortunately, they later met the king of the Principality of Treades, and Lisa became a princess of Treades through her mother's second marriage. The king and Prince Karl treated her very well. However, Lisa could not forget the past, so she secretly ran back to Thailand to seek revenge. Disguised as an administrative secretary, she entered her father's company and met Tepo, who had resigned from the Thai police force to start a business. The two grew closer and fell in love through their work, but Lisa's identity made their love seem destined to fail. Meanwhile, domestic rebels sought to kidnap Lisa and Prince Karl during their time in Thailand. At a critical moment, Tepo transformed from Lisa's boss to her personal bodyguard and personally escorted her back to her country. The king and Prince Karl ultimately quelled the rebellion, but Tepo had to return to Thailand after completing his escort mission, which made Lisa unhappy. Seeing this, the king and Prince Karl chose to support Lisa in pursuing her own happiness. In the end, Lisa and Tepo were happily together with no more obstacles between them.