This show was a mixture of (I write this in order) romance, comedy, and patriotism spirit. The promotional posters might mislead people about the overall feel it'll give you. It wasn't that serious (don't expect serious show with full packed action here), but it wasn't that light either. For me, the combination was just perfect.

The chemistry between both couples were really lovely, the acting were solid from main cast to supporting ones (Han Ji Min acting was the weakest tho). Even the supporting roles added much value to the show. The jazzy swing music really captured the emotion of the scenes and the setting (1930s)'s atmosphere. Very nice! Not to mention the colorful wardrobe. You will either love or hate Wan's exceptional liking in bright-colored clothes, but I guess a woman couldn't possibly hate Cha Song Ju's sense of fashion.

Perhaps its only drawback for me was the slapstick comedy they used here and there, and some cliche story elements.
And I think it's important to note this was my first drama of Kang Ji Hwan. I loved him for his role here, but his later roles felt so so after I watched this. I guess he is kinda trapped to Wan alike roles..

Give it a go~ ;)