Kim Tae Yeon, pure Korean, HIS hometown located in Jeonju.    Tiffany Hwang, an American Korean, HER family are all staying in Los Angeles.

Kim Taeng, he is a Korean whose been posted to L.A police force for 3 years. He is a smart and dorky detective plus little Byun. He has cracked a lot of mystery cases or even the most ridiculous like "owner killed by their pet" thru out the 3 years in L.A. Until one day he met the most troublesome lady named Tiffany Hwang, the two couldn't meet eye to eye and Taeng never thought that she will be the love of his life.

Taeyeon and Tiffany have been together for 10 years, they are couple since high school. They are one of the potential couple that their classmate foreseen will get marry after graduation, even their parents. But neither of them mention about marriage. Until one day.....   Kim Tae