Jae Hee, a diplomat in Prague, who is getting over a break-up, meets police detective Sang Hyun and romance blossoms. Jae Hee is the daughter of the Korean President and has to maintain a low profile. Jae Hee's ex, Young Woo and Sang Hyun's ex, Hye Joo make things complicated with secrets surrounding them. With the differences in social status, Jae Hee and Sang Hyun have to fight to see if the love that started in Prague can be overcome from what is trying to keep them apart.