Ji Suk and Eun Ha have identical faces. Eun Ha has an affair with Seok Hun and he is the only one she ever told about the discovery of her doppelgänger. However, only a few days before her arranged marriage, an accident occurs and Eun Ha falls into a coma. Seok Hun, who has his own plans for success, threatens Ji Suk to exchange places with Eun Ha and enter the marriage instead of her. Ji Suk marries the unsuspecting Min U and enters a life of lies and intrigues in which the master puppeteer is Seok Hun.
Although the plots of these two Korean dramas are quite different, they have a similar feel to them as they were written by the same person and both focus around some kind of secret. In both, the male lead has negative feelings towards the female lead, which slowly changes as he learns more about her.