"I'm sorry for not being present on your birthday," Jimin said to his son, who was finally an adult now. Time really flew fast. "It's okay, Dad. I know I was never important to you. I'm used to your absence. It doesn't bother me anymore," Namji said with a dimpled smile that held a glint of sadness. "Ah! Tell me what you want for your birthday. I'll give you anything you ask for," Jimin said, hoping to change the topic. "Anything?" "Yes, anything." "Then tell me about my mom and let me meet him," Namji said with determination. The stiffness of his dad and his family didn't go unnoticed by him. The topic of his birthgiver was always taboo in his family. [Is my mother that bad that his family never even says his name?] "Tell me about Kim Namjoon, so I can hate him the same way you all do."

In this 21st century, monarchy triumphs while democracy diminishes. Kings and queens rule over various lands, form allies, and engage in wars. In the kingdom of Seoul, there lives Prince Namjoon who has suffered heavily from past betrayal and as a result, no longer wishes to wed. That all ends when he is met with three princes who have fallen in love with him. Although this will cause a lot of problems for these princes as all three are in a competition to wed princess Nari, Namjoon's younger sister.