Revolves around an elite group of male youth called Hwarang who grow through passion and love in Seorabeol, the capital of the Kingdom of Silla.

Go Eun Chan is a young woman who supports her mother and sister. Her short hair, boyish clothes, and manner often lead to her being mistaken for a young man. Laboring under this false impression, wealthy Choi Han Kyul hires her to pretend to be his gay lover, to scare away the blind dates his grandmother has set up. Later, Han Kyul is asked to prove himself by managing a rundown coffee shop. Eun Chan maintains her false male identity to become a Coffee Prince employee. The charade becomes increasingly difficult as she falls in love with her boss. Han Kyul is both surprised and confused by his romantic feelings towards the boy. Written by L. Hamre

After their 4 children become independent, an old couple decide to live for themselves. One day, their 4 children come back to them.