在这部咖啡王子1号店喜剧/爱情片中,高恩赞（尹恩惠）是家里的家长，为了养家糊口女扮男装。在一次助人为乐的事件中遇到了崔汉洁（孔侑），汉洁误认为恩赞是与坏人一伙的而羞辱了恩赞的父母。恩赞为了索要道歉一直跟踪正在不断相亲的汉洁，汉洁灵机一动，与恩赞达成了一项抵挡相亲的交易——扮同性恋恋人。
汉洁喜欢堂兄崔汉星（李善钧）的女友韩柔珠（蔡静安），柔珠对绘画艺术的渴望最终使她放弃爱情去了纽约。当醒悟到自己对崔汉星爱得很深而返回韩国时，汉星的心扉已不能轻易地向她敞开了，此时恩赞正在慢慢走入汉星的内心。
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."
明知不该如此认真。心痒痒。崔瀚洁这个男人……。温馨清凉的夏日么么茶。一场由咖啡引起的故事。配角也精彩——那些配角啊。真的很咖啡，很王子。最爱女二-韩侑珠。偶尔奔跑，偶尔搭车。当帅气蜀黍遇见伪正太，于是，爱情来了。
