Noh Chak-hee ( Jung Ryeo-won) was taken in as a child by the Chairman of a large law firm in which she now works and is the star lawyer with an amazing win rate. Just prior to becoming a partner in the company a scandal means she has to take time out and work as a public defender and she goes to work in the office of the kindly Jwa Si Baek (Lee Kyuhyung). They appear diametrically opposed but whilst working together their viewpoints become closer as they become aware of each others pasts and this is aided as they investigate a serial killer. The plot is very clever and deserves credit but this is definitely aided by superb acting from the entire cast which is outstanding. It does have sweet moments but please be aware this is not a romance but a serious drama with some violent scenes.